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Top 10 Unibit Step Drill Bit – Step Drill Bits

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1. CO-Z

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CO-Z 5pcs Hss Cobalt Multiple Hole 50 Sizes Step Drill Bit Set with Aluminum Case

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CO-Z #ad - Non-walking drill tip provides fast and smooth drills on steel sheets, aluminum sheets, wood board, plastic board etc. Cobalt high speed steel along with the titanium coating ensures extreme durability, will stay new and shiny for years to come. The board must be smaller in thickness than the height of step drill bits. Different sized shanks ensure compatibility with 1/4, 3/8 and 1/2 in. All the bits come in a well-organized case for easy transport and storage. Chuck sizes. Please mark the spot that you are to drill for easier drilling and improved drill bits life.
BrandCO-Z #ad
ManufacturerCO-Z #ad
Height6.1 Inches
Length4.33 Inches
Width1.57 Inches
Part NumberCO-Z SDB-0000
ModelCO-Z SDB-0000

2. Neiko

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High Speed Steel | 1/4 to 1-3/8 | Total 10 Step Sizes, Neiko 10194A Titanium Step Drill Bit

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Neiko #ad - Two-flute design: clears chips faster and allows particles to escape easily. Tri-flatted shank: fits into power tools chuck securely and eliminates slip. Titanium | high speed steel: classic high speed steel with titanium coating for proven capability and durability in drilling holes in plastic, aluminum, copper, stainless steel and many other types of sheet metal.135° split point tip: increases cutting speed with self-centering and prevents walking. Includes 10 step sizes: 1/4", 1-1/4", 3/4", 3/8", 7/8", 1/2", 1", 5/8", 1-1/8", 1-3/8".
BrandNeiko #ad
ManufacturerRidgerock Tools Inc. #ad
Height1.6 Inches
Length6.1 Inches
Weight2 Pounds
Width2.9 Inches
Part Number10194A
Model10194A

3. Neiko

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Neiko, 43219-22909 10181A Quick Change HSS Titanium Coated Spiral Grooved Step Drill Bit 3-Piece Set | 31 Step Sizes in One Kit

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Neiko #ad - Quick change 1/4-inch hex shank makes for easy, convenient bit switches and is compatible with impact ready power tools. Assortment comes with 3 drill bits of a combined 31 sizes to add to your drilling arsenal: 13 step drill 1/8, 3/8, 1/2, 1/2-inch and 12 step drill 3/16, 1/2-inch 6 step drill 3/16, 7/16, 5/16, 7/32, 1/4, 15/32, 13/16, 7/16, 5/32, 9/16, 1/4, 3/4, 5/8, 1/4, 13/32, 3/16, 7/16, 9/32, 11/16, 11/32, 5/16, 5/16, 3/8, 3/8, 7/8-inch.

Unibit split point tip accelerates cutting speed while preventing angled walking away from center line of bore. Constructed of industrial high speed steel with titanium nitride coating for durability and strength to punch and drill clean holes in materials like plastic, aluminum, copper, wood, stainless steel and other types of sheet metal. Two-flute spiral grooved design deburrs chip, dust and debris for clearance and smooth cutting.
BrandNeiko #ad
ManufacturerNeiko #ad
Part Number43219-22909
Model10181A

4. Klein Tools

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Klein Tools KTSB15 Step Drill Bit #15 Double Fluted 7/8 to 1-3/8-Inch

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Klein Tools #ad - 3 hole sizes. Fast-starting, non-walking drill tip. High-visibility silver targets for primary hole sizes. Thick 3/8-inch hex shank won't round out in the drill chuck for a more positive grip. Two flutes cut faster and keep bit cooler.
BrandKlein Tools #ad
ManufacturerNorth Coast Electric #ad
Height0.7 Inches
Length5.2 Inches
Width3.4 Inches
Part NumberKTSB15
ModelKTSB15

5. Irwin Tools

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3/8-Inch Shank 10234, 3/16-Inch to 7/8-Inch, IRWIN Step Drill Bit

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Irwin Tools #ad - Speedpoint tip penetrates faster and prevents walking. This product is easy to use. Each drill acts as a pilot for the next size. Non-skid tip, no need for center punches.

3-faltted hex shank prevents drill chuck slipping. Drill diameters etched in flute for easy identification. This product is manufactured in United States. Backed by a full lifetime warranty. Ideal for drilling holes into thin materials such as stainless steel, aluminum, brass, copper, plastic and laminates. Made from industrial-grade high-speed molybdenum steel heat treated for maximum durability. Save time because you don't need to change drills for different-sized round holes in thin materials. This product is highly durable.
BrandIrwin Tools #ad
ManufacturerIRWIN #ad
Height6 Inches
Length0.1 Inches
Weight0.2 Pounds
Width3 Inches
Part Number10234
Model10234

6. Neiko

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Neiko 10197A Titanium Step Drill Bit Set, High Speed Steel | 5-Piece Set | Total 50 Sizes

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Neiko #ad - Set comes with a sturdy blow molded case. Classic high speed steel with titanium coating for proven capability and durability in drilling holes in plastic, aluminum, copper, stainless steel and many other types of sheet metal.

135° split point and two flute design increases cutting speed with self-centering and prevents walking, clears chips faster and allows particles to escape easily. Tri flatted shank fits into power tools chuck securely and eliminates slip. Set includes: drill bit #1 10 step sizes: 1/4", 3/8", 3/4", 1/2", 7/8", 7/16", 9/16", 3/8", 1/4", 5/8", 13/16", 5/16", 5/32", 7/16", 1/2"; drill bit #5 6 steps: 3/16", 5/8", 1", 1/4", 3/8", 7/16", 1-1/8", 9/32", 15/32", 5/8", 5/16", 3/4"; drill bit #4 13 steps: 1/8", 1-3/8”; drill bit #2 12 step sizes: 3/16", 1/2", 7/16", 11/32", 11/16", 7/8; drill bit #3 9 steps: 1/4", 11/16", 9/16", 13/32", 3/4", 3/16", 5/16", 7/32", 3/8", 5/16", 3/8", 1/2", 1/4", 1-1/4", 1/2".

BrandNeiko #ad
ManufacturerGrace Marketing- HI #ad
Height1.57 Inches
Length7.95 Inches
Width4.72 Inches
Part Number10197A
Model10197A

7. DEWALT

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7/8-Inch to 1-1/8-Inch DWA1789IR, DEWALT Step Drill Bit Set

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DEWALT #ad - Laser engraved numbers increases step visibility. Split point tip increases speed. Optimized for impact driver usage. Titanium two flute spiral design provides longer life and better chip removal.
BrandDEWALT #ad
ManufacturerDewalt #ad
Height1.13 Inches
Length6 Inches
Width2.88 Inches
Part NumberDWA1789IR
ModelDWA1789IR

8. COMOWARE

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COMOWARE Step Drill Bit Set & Automatic Center Punch- Unibit, Short Length Drill Bits Set of 5 pcs, High Speed Steel, Double Cutting Blades, Titanium Coated, Total 50 Sizes with Aluminum Case

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COMOWARE #ad - Meet your demands - with the step drill bits we offered, you can process different kinds of diameter holes, which greatly saves you a lot of trouble. Great for metal/wood/plastic countersunk.

Easy organizing - a drill bits holder with size index is included in the metal kit for easy storage and organizing without fear of it falling out. Hss titanium coating - high speed steel along with titanium coating ensures outstanding durability and sharpness, can reduces the friction, runs cooler. Suitable for home DIY, and General Building/Engineering Use.

Design - the split point tip is at 118 degrees to increase the wear resistance. The two flute design provides a smoother cutting, allows the material particles escape easily for a much more clean drilling operation. Set includes - the drill bits set includes five common sizes for versatility, can fit the majority of brands currently on the market.
BrandCOMOWARE #ad
ManufacturerCOMOWARE #ad

9. TACKLIFE

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50 Sizes, TACKLIFE 5PCS Titanium Step Drill Bit Set & Automatic Center Punch,PDH06A, Double Cutting Blades Design, High Speed Steel Drill Bit Set, Aluminum Case

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TACKLIFE #ad - Double cutting blades & three-sided shank - double cutting blades and X-type openings design ensures a faster and smoother cutting; and 3-sided shank design prevents slip in drill chuck; Provided with small pressure and the sets can cut through the wood, sheet metal, steel and other surfaces.

Hss & plastic & titanium coating - high speed steel makes it last longer than others, titanium coating ensures easily cut through steel sheets,aluminum sheets,copper & wood board and many other types of sheet metal with ease, and it can automatically deburr holes while drilling to keep the drill bit clean. What you get - tacklife step drill, automatic Center Punch, Aluminum Case, User's Manual.50 size in 5 - the bits set includes five standard step drill bits that can replace 50 individual drill bits, you can process 50 different kinds of diameter holes with the five pieces.

Automatic center punch & protective aluminum case - the center punch delivers an automatic, high-impact, spring-loaded strike through adjusting the cap; its brass body has a deeply knurled surface for nonslip control; and the carbide tipped bit makes the center punch 10 times stronger than normal one;protective aluminum case makes the drills not easy to dull.
BrandTACKLIFE #ad
ManufacturerTACKLIFE #ad
Height5.91 Inches
Length6.3 Inches
Width1.89 Inches
Part NumberPDH06A

10. CO-Z

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

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CO-Z #ad - Titanium coating - coated by titanium, this step drill set performs well in heat, corrosion and rust resistance. Hss steel construction - High-speed steel construction for longer cutting edge life even at extreme temperatures.

Automatic center punch - delivers an automatic, high-impact, spring-loaded strike when pressed against surface, adjustable cap regulates striking force.550 size in 5 - the bits set includes five standard step drill bits that can replace 50 individual drill bits. A must-have for handyman or professionals - Perfect for home repairs and light jobs such as drilling holes in plastic, aluminum, copper and many other types of sheet metal.
BrandCO-Z #ad
ManufacturerCO-Z #ad
Part NumberSDB-2017-06