Top 10 Step Bit Cobalt – Drill Bits

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1. AugTouf


Wood, Stainless Steel, Plastic, 1/4" Hex Shank Unibit Step Bit for Metal, AugTouf Four Spiral Flute Cobalt Step Drill Bit Set, 1/8"-7/8"3pcs Impact Ready Four-Flute Step Bit, Aluminum

AugTouf #ad - Four spiral flute - four cutting blades design guarantees a faster and smoother cutting, allows swarf escape easily. 34 total step size - includes 3 bits with 1/8" - 1/2", 1/4" - 3/4", 3/16" - 7/8".

90 days warranty - if you are not fully satisfied for any reason, please contact us for 100% refund or replacement. 1/4" hex-shank quick change - Quick release slot to eliminate slipping. Patented product. If the hex shank snap off, please contact us for replacement. Tialn coating- with 89hrc surface hardness, harder materials can be cut and higher cutting speeds can be achieved. M35 cobalt hss step drill - prefect for Stainless Steel/Metal Sheet/Wood/Plastic/Aluminum Sheet/Copper and other metal sheets.
BrandAugTouf #ad
ManufacturerAugTouf #ad
Part Number6974157528189



TEMO M35 Cobalt Double Flute Step Drill, 9 Size From 1/4 Inch To 3/4 Inch, 3/8 Inch Shank

TEMO #ad - It is widely used in metal manufacturing because of its ability to resist wear over conventional high speed steels, allowing for shorter cycle times in production environments due to higher cutting speeds or from the increase in time between tool changes.

Smooth cutting double-fluted design for true round hole; self-starting for clean holes in thin materials. M35 cobalt step drill 3/8" 9. 52mm shank 9 hole 1/4" 6. 35mm to 3/4" 19. 05mm. 3/8 inch shank with 3 flats to eliminate slipping. The addition of cobalt increases heat resistance. 9 hole sizes: 1/4" 6. 35mm, 3/4" 19. 05mm, 9/16" 14. 29mm, 1/2" 12. 7mm, 5/16" 7. 94mm, 11/16" 17. 46mm, 3/8" 9. 52mm, 5/8" 15. 88mm, 7/16" 11. 11mm, with 1/16" 1. 59mm increments.
BrandTEMO #ad
ManufacturerGolden Coulee #ad
Height1 Inches
Length3 Inches
Weight3 ounces
Width1 Inches
Part Number3049



Multiple Hole Stepped Up Bit for Professionals, ZELCAN Cobalt Added M35 Step Drill Bit, Spiral Step Drill Bit, Metal Sheet, Unibit Drill Bit for Cutting Drilling Holes On Stainless Steel, Steel

ZELCAN #ad - Jam-free performance - dual-flute design and three-sided shank design is optimized for cordless drills in high speed provides greater speed and control while minimizing steel scurf flying around, to lengthen service life, please do not set drilling speed at its maximum to avoid damage to the cutting edge.

Durable & sturdy w/cobalt added - solid m35 molybdenum high speed construction with cobalt added for extra durability, close to impossible to snap compared conventional drill bits, the unique 3-sided shank prevents slip in drill chuck and reduces shocks; oiling the bits recommended before every use to maximize the service life. Universal compatibility - designed for drilling on steel sheets up to 008 in.

Compatible with drills 1/4”, 3/8”, acrylic, PVC and wooden boards up to 0.2 in. Marked with obvious marks for easy and precise hole drilling, 1/2”. One bit for all - every bit comes with 10 sizes so you can drill up to 10 holes with different diameters, every package comes with 5 bits, saving you time and efforts to change bits, that makes it 50 diameters in total.
BrandZELCAN #ad
ManufacturerCO-Z #ad
Part NumberSDBCM35CO

4. Klein Tools


3/8-Inch Hex Shank, Klein Tools KTSB15 Step Drill Bit #15 Double Fluted 7/8 to 1-3/8-Inch with Easy-to-Read Step Markings and Targets

Klein Tools #ad - High-visibility silver targets for primary hole sizes. Fast-starting, non-walking drill tip. Thick 3/8-inch hex shank won't round out in the drill chuck for a more positive grip. 3 hole sizes. Two flutes on this Step Drill Bit cut faster and keep bit cooler.
BrandKlein Tools #ad
ManufacturerKlein Tools #ad
Height0.7 Inches
Length5.2 Inches
Weight0.43 Pounds
Width3.4 Inches
Part NumberKTSB15

5. Irwin Tools


3/16-Inch to 7/8-Inch, Cobalt Alloy Steel, 3/8-Inch Shank 10234CB, IRWIN Step Drill Bit

Irwin Tools #ad - Cobalt alloy steel high speed steel for extended cutting edge life makes it ideal for drilling stainless steel. Single-flute cutting edge drills true round holes with smooth, clean finish. Drills 12 different hole sizes, from 3/16" to 7/8" by 16ths. Speedpoint tip prevents "walking, " gets fast starts, and eliminates the need for pilot/starting hole.
BrandIrwin Tools #ad
ManufacturerIRWIN #ad
Height6.1 Inches
Length3 Inches
Weight0 Pounds
Width1.3 Inches
Part Number10234cb

6. Irwin Tools


3-Piece 10502CB, IRWIN Step Drill Bit Set

Irwin Tools #ad - Speedpoint tip for fast starts. Speedpoint tip for fast starts. Includes #1c, #2c and #3C bits. Irwin drill bits have laser-marked sizes for simple identification. Drill bits feature a radial concave flute. Drill bits feature a radial concave flute. Includes #1c, #2c and #3C bits. Drill bit is engineered with M-35-grade cobalt steel for maximum life when drilling in tough steel. Irwin drill bits have laser-marked sizes for simple identification. Drill bit is engineered with M-35-grade Cobalt Alloy Steel steel for maximum life when drilling in tough steel.
BrandIrwin Tools #ad
ManufacturerIRWIN #ad
Height1.63 Inches
Length7.75 Inches
Weight0.2 Pounds
Width5.5 Inches
Part Number10502CB



Hss Cobalt Multiple Hole 50 Sizes, HYCLAT 5pcs Titanium Step Drill Bit, High-Speed Metal Steel Step Drill Bit Set with Aluminum Case or Canvas Packing

HYCLAT #ad - It's can work as 50pcs twist drill bits. The step drill bits can work with stainless steel sheets, and wood. You don't have to replace drill bit constantly for different bore sizes. The protective aluminum case makes the drills not easy to dull, canvas packing will more light and easy to carry, plastic material, bur, aluminum alloy, both of them would be shipped randomly.

Titanium high-speed steel: classic and sturdy high-speed steel with titanium coating for proven capability and durability in drilling holes in plastic, copper, aluminum, stainless steel and many other types of the metal sheet. Widely application: the step drill bits can be used to chamfer, and drill or enlarge holes. Features: 5pcs step drill bits enable 50 sizes - each step drill bit can drill several bore diameters.

Double cutting blades & three-sided shank - double cutting blades and X-type openings design ensure a faster and smoother cutting; 3-sided shank design prevents slip in drill chuck can cut through the wood, steel, sheet metal, and other surfaces. What you get - hyclat step drill, aluminum case or canvas Bag, 24 months warranty - Ideal Gift for Father's Day, Perfect for DIY lover.
BrandHYCLAT #ad
ManufacturerHYCLAT #ad
Weight0.9 Pounds
Part NumberHSS0501



STROTON 4-32mm Metric 6% Cobalt Step Drill Bit for Stainless Steel and Hard Metal 15 Steps

STROTON #ad - Premium m35 6% cobalt steel, 66-69 hrc rockwell Hardness Scale, usually give the best heat, Wear and Chip Resistance and Long Tool Life.

Grinding the cutting edge three times, desigh for cutting through Stainless steel, Iron plate, Aluminum, Ducts, with the High HRC and Heat Resistance of the Material, Wood, PVC and Plastic. This cobalt step drill bit is typically capable of running two to three times Faster. Despite the higher price, the cost per hole when Using Cobalt Drill Bit Will be the Lowest, Since It Can Produce So Many More Holes. 4-32mm 15 steps 4mm, 12mm, 20mm, 24mm, 6mm, 10mm, 8mm, 18mm, 28mm, 30mm, 26mm, 14mm, 22mm, 16mm, 32mm.
BrandSTROTON #ad
ManufacturerSTROTON Ltd #ad
Part NumberCobalt-15s-(4-32mm)

9. CO-Z


Multiple Hole Stepped Up Bits for DIY Lovers33, 50 Sizes in 5 High Speed Steel Unibit Drill Bits Set for Sheet Metal with Aluminum Case, CO-Z Step Drill Bits, HSS 5PCS Titanium Step Drill Bit Set

CO-Z #ad - Chuck sizes. You are capable to drill holes in different sizes which can meet your normal needs. Keep your step drill bits well Organized: All the bits come in a well-organized case for easy transport and storage.

Use center punch to mark the spot: Please mark the spot that you are to drill for easier drilling and improved drill bits life. Different sizes of holes can be drilled: different sized shanks ensure compatibility with 1/4, 3/8 and 1/2 in. Extreme durabikity: cobalt high speed steel drill bits along with the titanium coating ensures extreme durability, will stay new and shiny for years to come. Smooth drilling: non-walking drill tip provides fast and smooth drills on steel sheets, aluminum sheets, wood board, plastic board etc. The board must be smaller in thickness than the height of step drill bits.
BrandCO-Z #ad
ManufacturerCO-Z #ad
Height6.1 Inches
Length4.33 Inches
Weight1.15 Pounds
Width1.57 Inches
Part NumberCO-Z SDB-0000
ModelCO-Z SDB-0000

10. Yesland


Yesland 5pcs Hss Cobalt, Multiple Hole 50 Sizes High Speed Metal Step Drill Bit Set with Aluminum Case

Yesland #ad - The drill bits set includes 5 common sizes for versatility, it can fit the majority of brands currently on the market. With these step drill bits, general building or engineering use. Different sized shanks ensure compatibility with 1/4, 3/8 and 1/2 inch chuck sizes.

Yesland hss cobalt high speed steel along with the titanium coating ensures extreme durability which will stay new and shiny for years to come. A drill bits holder with size index is included in the metal kit so that no need to worry about it falling out. Please mark the spot that you are to drill for easier drilling and improved drill bits life. Non-walking drill tip provides fast and smooth drills on steel sheets, aluminum sheets, wood board, you can process different kinds of diameter holes, which greatly saves you a lot of time.

Suitable for DIY, plastic board etc. Two-flute design deburrs during drilling, clearing chips faster and allowing particles to escape for cleaner operation, keep bit cleaning. It can also ensures outstanding sharpness, reduce the friction and runs cooler. All the bits come in a well-organized case for easy transport and storage.
BrandYesland #ad
ManufacturerYesland #ad
Part NumberHT001