Step Drill Bits
- IRWIN®Unibit™ #1M HSS Metric Step Drill Bit (11101)Unibit™ #1M HSS Metric Step Drill Bit (11101) by IRWIN®. IRWIN® step drill bits are ideal for drilling holes in just about any type of thin material. General purpose high speed steel UNIBIT step drill bits are perfect for use in mild...Ideal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic and laminatesSingle-flute cutting edge for greater control through steps$20.81
- IRWIN®Unibit™ #1MT Titanium Metric Step Drill Bit (16101)Unibit™ #1MT Titanium Metric Step Drill Bit (16101) by IRWIN®. IRWIN® step drill bits are ideal for drilling holes in just about any type of thin material. General purpose high speed steel UNIBIT step drill bits are perfect for use...Ideal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic and laminatesSingle-flute cutting edge for greater control through steps$27.13
- IRWIN®Unibit™ #2 Cobalt Fractional Step Drill Bit (10232CB)Unibit™ #2 Cobalt Fractional Step Drill Bit (10232CB) by IRWIN®. IRWIN® step drill bits are ideal for drilling holes in just about any type of thin material. General purpose high speed steel UNIBIT step drill bits are perfect for use...6X Longer life vs. the competitionM35 grade Cobalt HSS$30.11
- IRWIN®Unibit™ #20 Cobalt Fractional Step Drill Bit (10220CB)Unibit™ #20 Cobalt Fractional Step Drill Bit (10220CB) by IRWIN®. IRWIN® step drill bits are ideal for drilling holes in just about any type of thin material. General purpose high speed steel UNIBIT step drill bits are perfect for...6X Longer life vs. the competitionM35 grade Cobalt HSS$59.40
- IRWIN®Unibit™ #21 HSS Fractional Step Drill Bit (10221)Unibit™ #21 HSS Fractional Step Drill Bit (10221) by IRWIN®. IRWIN® step drill bits are ideal for drilling holes in just about any type of thin material. General purpose high speed steel UNIBIT step drill bits are perfect for use in...Single-flute cutting edge for greater control through stepsHex shank prevents slipping in drill chuck$90.92
- IRWIN®Unibit™ #21M HSS Metric Step Drill Bit (11581)Unibit™ #21M HSS Metric Step Drill Bit (11581) by IRWIN®. IRWIN® step drill bits are ideal for drilling holes in just about any type of thin material. General purpose high speed steel UNIBIT step drill bits are perfect for use in...Ideal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic and laminatesSingle-flute cutting edge for greater control through steps$78.63
- IRWIN®Unibit™ #2M HSS Metric Step Drill Bit (11102)Unibit™ #2M HSS Metric Step Drill Bit (11102) by IRWIN®. IRWIN® step drill bits are ideal for drilling holes in just about any type of thin material. General purpose high speed steel UNIBIT step drill bits are perfect for use in mild...Ideal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic and laminatesSingle-flute cutting edge for greater control through steps$23.58
- IRWIN®Unibit™ #2T Titanium Fractional Step Drill Bit (15102)Unibit™ #2T Titanium Fractional Step Drill Bit (15102) by IRWIN®. IRWIN® step drill bits are ideal for drilling holes in just about any type of thin material. General purpose high speed steel UNIBIT step drill bits are perfect for...Ideal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic and laminatesSingle-flute cutting edge for greater control through steps$36.95
- IRWIN®Unibit™ #3 Cobalt Fractional Step Drill Bit (10233CB)Unibit™ #3 Cobalt Fractional Step Drill Bit (10233CB) by IRWIN®. IRWIN® step drill bits are ideal for drilling holes in just about any type of thin material. General purpose high speed steel UNIBIT step drill bits are perfect for use...6X Longer life vs. the competitionM35 grade Cobalt HSS$59.80
- IRWIN®Unibit™ #3 HSS Step Drill Bit (3)Unibit™ #3 HSS Step Drill Bit (3) by IRWIN®. IRWIN® step drill bits are ideal for drilling holes in just about any type of thin material. General purpose high speed steel UNIBIT step drill bits are perfect for use in mild steel,...Single-flute cutting edge for greater control through stepsHex shank prevents slipping in drill chuck$111.41
- IRWIN®Unibit™ #3M Cobalt Metric Step Drill Bit (11103CB)Unibit™ #3M Cobalt Metric Step Drill Bit by IRWIN®. IRWIN® step drill bits are ideal for drilling holes in just about any type of thin material. General purpose high speed steel UNIBIT step drill bits are perfect for use in mild...6X Longer life vs. the competitionM35 grade Cobalt HSS$62.85
- IRWIN®Unibit™ #3MT Titanium Metric Step Drill Bit (16103)Unibit™ #3MT Titanium Metric Step Drill Bit (16103) by IRWIN®. IRWIN® step drill bits are ideal for drilling holes in just about any type of thin material. General purpose high speed steel UNIBIT step drill bits are perfect for use...Ideal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic and laminatesSingle-flute cutting edge for greater control through steps$64.21
- IRWIN®Unibit™ #3T Titanium Fractional Step Drill Bit (15103)Unibit™ #3T Titanium Fractional Step Drill Bit (15103) by IRWIN®. IRWIN® step drill bits are ideal for drilling holes in just about any type of thin material. General purpose high speed steel UNIBIT step drill bits are perfect for...Ideal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic and laminatesSingle-flute cutting edge for greater control through steps$62.54
- IRWIN®Unibit™ #4 Cobalt Fractional Step Drill Bit (10234CB)Unibit™ #4 Cobalt Fractional Step Drill Bit (10234CB) by IRWIN®. IRWIN® step drill bits are ideal for drilling holes in just about any type of thin material. General purpose high speed steel UNIBIT step drill bits are perfect for use...6X Longer life vs. the competitionM35 grade Cobalt HSS$62.09
- IRWIN®Unibit™ #4MT Titanium Metric Step Drill Bit (16104)Unibit™ #4MT Titanium Metric Step Drill Bit (16104) by IRWIN®. IRWIN® step drill bits are ideal for drilling holes in just about any type of thin material. General purpose high speed steel UNIBIT step drill bits are perfect for use...Ideal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic and laminatesSingle-flute cutting edge for greater control through steps$65.22
- IRWIN®Unibit™ #4T TIN Fractional Step Drill Bit (4T)Unibit™ #4T TIN Fractional Step Drill Bit by IRWIN®. IRWIN® step drill bits are ideal for drilling holes in just about any type of thin material. General purpose high speed steel UNIBIT step drill bits are perfect for use in mild...Ideal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic and laminatesSingle-flute cutting edge for greater control through steps$69.59
- IRWIN®Unibit™ #5M HSS Metric Step Drill Bit (11105)Unibit™ #5M HSS Metric Step Drill Bit (11105) by IRWIN®. IRWIN® step drill bits are ideal for drilling holes in just about any type of thin material. General purpose high speed steel UNIBIT step drill bits are perfect for use in mild...Ideal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic and laminatesSingle-flute cutting edge for greater control through steps$124.62
- IRWIN®Unibit™ #5MT Titanium Metric Step Drill Bit (16105)Unibit™ #5MT Titanium Metric Step Drill Bit (16105) by IRWIN®. IRWIN® step drill bits are ideal for drilling holes in just about any type of thin material. General purpose high speed steel UNIBIT step drill bits are perfect for use...Ideal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic and laminatesSingle-flute cutting edge for greater control through steps$125.42
- IRWIN®Unibit™ #9 Cobalt Fractional Step Drill Bit (10239CB)Unibit™ #9 Cobalt Fractional Step Drill Bit (10239CB) by IRWIN®. IRWIN® step drill bits are ideal for drilling holes in just about any type of thin material. General purpose high speed steel UNIBIT step drill bits are perfect for use...6X Longer life vs. the competitionM35 grade Cobalt HSS$88.70
- IRWIN®Unibit™ #9 HSS Self-Starting Fractional Step Drill Bit (10239)Unibit™ #9 HSS Self-Starting Fractional Step Drill Bit (10239) by IRWIN®. IRWIN® step drill bits are ideal for drilling holes in just about any type of thin material. General purpose high speed steel UNIBIT step drill bits are...Single-flute cutting edge for greater control through stepsHex shank prevents slipping in drill chuck$65.59
- IRWIN®Unibit™ 3-piece Black Oxide HSS Step Drill Bit Set (10502ZR)Unibit™ 3-piece Black Oxide HSS Step Drill Bit Set by IRWIN®. If you’re looking for a reliable solution to complete your project, this 1st-grade product is right up your alley. Designed utilizing the finest materials, it delivers...Designed to help to get your job done rightManufactured utilizing the highest quality materials$90.39
- IRWIN®Unibit™ 3-piece TiN Step Drill Bit Set (15502)Unibit™ 3-piece TiN Step Drill Bit Set by IRWIN®. IRWIN® step drill bits are ideal for drilling holes in just about any type of thin material. General purpose high speed steel UNIBIT step drill bits are perfect for use in mild steel,...Single-flute cutting edge for greater control through steps3 flatted shank prevents slipping in drill chuck$125.69
- IRWIN®Unibit™ 4-piece HSS/TiN Step Drill Bit Set (10228)Unibit™ 4-piece HSS/TiN Step Drill Bit Set by IRWIN®. IRWIN® step drill bits are ideal for drilling holes in just about any type of thin material. General purpose high speed steel UNIBIT step drill bits are perfect for use in mild...Single-flute cutting edge for greater control through steps3 flatted shank prevents slipping in drill chuck$94.76
- IRWIN®Unibit™/TurboMax™ 9-piece TiN Step & Drill Bit Pro Set (3018008)Unibit™/TurboMax™ 9-piece TiN Step & Drill Bit Pro Set by IRWIN®. IRWIN® step drill bits are ideal for drilling holes in just about any type of thin material. General purpose high speed steel UNIBIT step drill bits are perfect for...Designed to help to get your job done rightManufactured utilizing the highest quality materials$58.91
- Install Bay®#3 Unibit Fractional Step Drill Bit (IB59003)#3 Unibit Fractional Step Drill Bit (IB59003) by Install Bay®. Single Fluted Design Eliminates Skidding And Makes For Easier Resharpening. Also Features Laser Etched Hole Sizes And Anti Skid Tip. Works With Most Metals.Designed to help to get your job done rightManufactured utilizing the highest quality materials$130.99
- K-Tool International®#1 HSS Fractional Step Drill Bit (KTI71235)#1 HSS Fractional Step Drill Bit (KTI71235) by K-Tool International®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet...Designed to help to get your job done rightManufactured utilizing the highest quality materials$13.29
- K-Tool International®#2 HSS Fractional Step Drill Bit (KTI71236)#2 HSS Fractional Step Drill Bit (KTI71236) by K-Tool International®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet...Designed to help to get your job done rightManufactured utilizing the highest quality materials$3.49
- K-Tool International®#3 HSS Fractional Step Drill Bit (KTI71237)#3 HSS Fractional Step Drill Bit (KTI71237) by K-Tool International®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet...Designed to help to get your job done rightManufactured utilizing the highest quality materials$10.99
- K-Tool International®3-piece Titanium Coated HSS Step Drill Bit Set (KTI71233)3-piece Titanium Coated HSS Step Drill Bit Set by K-Tool International®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet...Designed to help to get your job done rightManufactured utilizing the highest quality materials$19.35
- Klein Tools®#3 Fractional Step Drill Bit (59003)#3 Fractional Step Drill Bit by Klein Tools®. Use Klein Tools High Speed Step Drill Bits to drill multiple size holes in thin sections of metal, plastic and wood using just a single bit. The single-fluted design helps eliminate...Single-fluted design eliminates skidding and makes for easier resharpeningLaser-etched hole size are easy-to-read and permanent$40.52
Step drill bits are widely used in plumbing and general construction to make round holes in soft materials. However, they can also be applicable for very thin stainless steel, aluminum, brass, copper and other metals. These versatile tools are particularly handy when it comes to enlarging holes that have already been drilled. A step drill bit features a unique staircase profile that allows it to cut holes of different diameters. It has a smaller pilot drill point that drills the initial small holes, and to be able to achieve the desired size of the hole it’s recommended to advance the drill bit further into the material. Step drill bits are usually coated in a titanium-nitride coating that helps minimize heat build-up, enhance surface hardness and ensure long-lasting service.
Whether you are a professional contractor, a plumber or a hobbyist working on your own construction project, high-quality step drill bits offered on our website will give you the reliability and versatility you need to perform your tasks as easily and effectively as possible. Now you can create perfect round holes, enlarge the existing ones or deburr holes left by other bits using only one tool – and that’s the step drill bit. Here, we carry a full line of first-rate step drill bits that are made from the sturdiest materials such as high-speed steel to bring the ultimate in performance and wear resistance. Most step drill bits showcased in our online store have a flatted shank or hex shank that allows to avoid slipping in drill chuck.