NEIKO 10181A Step Drill Bit Set, 3 Piece, Spiral Grooved for Faster Drilling, Step Bits for Stainless Steel, Metal, Wood, Plastic, Unibit Cone Drill Bits with 31 Step Sizes Total 3 PC STEP DRILL BIT SET Spiral

Brand:Neiko

3.4/5

42.84

INCLUDES: Each bit set comes with 3 drill bits of a combined 31 sizes to add to your drilling arsenal: 13 step drill (1/8, 5/32, 3/16, 7/32, 1/4, 9/32, 5/16, 11/32, 3/8, 13/32, 7/16, 15/32, 1/2-inch) 6 step drill (3/16, 1/4, 5/16, 3/8, 7/16, 1/2-inch) and 12 step drill (3/16, 1/4, 5/16, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 13/16, 7/8-inch). QUICK-CHANGE: The 1/4-inch hex shank makes for easy, convenient, and quick stepper bit switches and is compatible with impact ready power tools. SPIRAL DESIGN: The two-flute spiral grooved design deburrs chip, dust and debris for clearance and smooth cutting. With 31 step sizes, each hole made with these step bits will be precise. STEP DRILL BIT FOR METAL: With a split point tip that accelerates cutting speed while preventing angled walking away from center line of bore, drilling holes in metal is fast, efficient, and clean. PREMIUM STEP BIT: Each unibit is constructed of industrial high-speed steel with a titanium nitride coating for durability and strength to punch and drill clean holes in materials like plastic, aluminum, wood, copper, stainless steel, and other types of sheet metal.

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INCLUDES: Each bit set comes with 3 drill bits of a combined 31 sizes to add to your drilling arsenal: 13 step drill (1/8, 5/32, 3/16, 7/32, 1/4, 9/32, 5/16, 11/32, 3/8, 13/32, 7/16, 15/32, 1/2-inch) 6 step drill (3/16, 1/4, 5/16, 3/8, 7/16, 1/2-inch) and 12 step drill (3/16, 1/4, 5/16, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 13/16, 7/8-inch). QUICK-CHANGE: The 1/4-inch hex shank makes for easy, convenient, and quick stepper bit switches and is compatible with impact ready power tools. SPIRAL DESIGN: The two-flute spiral grooved design deburrs chip, dust and debris for clearance and smooth cutting. With 31 step sizes, each hole made with these step bits will be precise. STEP DRILL BIT FOR METAL: With a split point tip that accelerates cutting speed while preventing angled walking away from center line of bore, drilling holes in metal is fast, efficient, and clean. PREMIUM STEP BIT: Each unibit is constructed of industrial high-speed steel with a titanium nitride coating for durability and strength to punch and drill clean holes in materials like plastic, aluminum, wood, copper, stainless steel, and other types of sheet metal.
Brand Neiko
Cutting Angle String 135 Degrees
Finish Type Titanium
Is Discontinued By Manufacturer No
Item model number 10181A
Manufacturer Neiko
Material High Speed Steel
Product Dimensions 6 x 3.5 x 0.75 inches; 4.16 Ounces
Shank Type Hex

3.4

13 Review
5 Star
69
4 Star
16
3 Star
7
2 Star
2
1 Star
6

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Scritto da: K. Seprish
Will make a quick hole through heavy steel
I use these for making larger holes in steel first in a beam to put my post that support my house onto the beam with and then I use them to modify a hitch extension to change it from a 12 inch to a 7 1/2 inch extension. They make short work of making big holes in steel.
Scritto da: cliffwmay
Works well
Drills very large holes quickly in thinner materials..so far stays sharp longer than other step bits I've used
Scritto da: Ronbishop5649@gmail
Worth the money
It worked better than I thought it would
Scritto da: Esmeralda
Very good
Very good
Scritto da: RANelSr.
Wife’s loving it
Wife’s loving it
Scritto da: Gerardo Escoto
La calidad
No siento que sean muy resistentes.
Scritto da: John Porter
Dull already
Used it twice and it dull already
Scritto da: salem
These are good
Love the different sizes. They are almost too good. Case is super fancy idk why
Scritto da: Philip Quirk
Great hole cutters
It took me way too long to realize that I needed these hole cutters. I love them. Use them for cutting holes in thin (metal) material - so much better than drills - which leave a really raggedy hole. To date I have used them for making holes in a garage door (to replace the broken handle) and making a perfect water pipe hole in some self adhesive floor tiles. I wish I had known about these 40 years ago
Scritto da: Stephen Morton
Will not go through 1/8 plate....
Thought I might give these a try as there were good reviews, but the adage that you get what you pay for is so true. None of the uni's in this set would go through 1/8 " plate steel , they would just sit and chatter. Tried cutting oil, speed, everything. nothing worked. Got do annoyed a tossed them out the garage door. No idea where they landed, but at that point did not care. Going back to my regular brand. They cost mor, but they last 5 times longer with cutting fluid.
Scritto da: Mark
Great, cheap, self cleaning stepped bits
I do commercial HVAC and these things are amazing. Way better then the cheap $15 ones. As long as you start with a pilot hole and dont use them to start the hole, they drill through 10ga galvanized not a problem. 16ga and under you can use them to drill straight through.
Scritto da: Ash N
Very fast drilling
So far they are doing awesome. For thin sheet aluminum and steel in vehicles, these drill through very quickly like it's nothing, and do a great job at evacuating shavings thanks to the spiral flute design. For the value, definitely recommend for mechanics and autobody.
Scritto da: Luis A.
Van bien
Ya había comprado otra marca china y no duraron mucho. Estas las e ocupado con distintos materiales, como plástico, acero dulce, acero inoxidable. Hasta 4 mm de grosor y van muy bien. Quiero aclarar que las uso para bricolaje, y claro que no las uso a diario.

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