spiral drill bit conical drill bit

Step drill bit is also called step drill bit set or pagoda drill bit.The stepped drill bit is made of high-quality steel with high hardness and wear-resistant unique stepped scale design. Drilling and reaming can be done in one step.


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Turbo Step Drill Bits: Extreme Performance for Metal

Experience exceptional drilling performance in both high- and low-speed mode with DLTC’s Turbo Step Drill Bits. These spiral drill bit are specifically engineered for impact drivers, featuring a hex shank and drill/driver compatibility. Enjoy faster cutting with 2X cutting edges, providing increased drilling speed.

conical drill bit Key Features:

1. High-Speed Design: Sharp cutting edges and premium heat management deliver enhanced bit life and superior hole quality.

2. Wide Range of Hole Sizes: This set offers a variety of hole diameters, catering to common applications, various conduit sizes, and knockout holes.

3. Efficient Operation: With 2X holes per charge, these spiral drill bits boost user productivity and extend battery life.

4. Clean and Burr-Free Holes: The two optimized cutting edges on the bit steps ensure clean holes without burrs.

5.Balanced Double Flute: Eliminates chatter and vibration, ensuring smooth and precise drilling.

6. Versatile Material Compatibility: Ideal for use in sheet metal, ducts, steel, copper, brass, aluminum, plastic, vinyl siding, plasterboard, PVC, stainless steel, and cast iron.

Included Sizes:

– (1) 3/16 in – 7/8 in
– (1) 1/4 in – 7/8 in – 1-1/8 in

Take your drilling capabilities to the next level with DLTC’s conical drill bit. Perfect for electrical, plumbing, and HVAC contractors, these bits deliver smooth and efficient drilling in a wide range of materials. Upgrade your drilling experience with the precision and reliability of DLTC’s Turbo Step Drill Bits.

Our factory specializes in the production of various types of hardware tools: glass drill bits, concrete drill bitsMetal drill bits, chisels, hole saws, diamond slices, etc. Please contact us if necessary.

Supply Ability :  100000 Piece/Pieces per Month
Port                             YIWU/WENZHOU/ZHEJIANG

our catalog:concrete hole saw

spiral drill bit Product Image:

spiral drill bit
spiral drill bit


factory production line:

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Packaging Details:

Packing detail you can choose normal packing or customized packaging.

parallel shank drill
Extended reading:Drill Bits: Ano ang dapat gamitin?

Additional information

Customized support:



Masonry Drilling

Tip Material:

YG8C Carbide Tip


Sliver color

Brand Name:

OEM Acceptable


Center Drill Bit, Core Drill Bit, SDS Plus Drill Bit


Sand blasted

Body Material:

40Cr Steel


Plastic tube ,Plastic hanger ,Plastic bag


for Concrete,Granite,Brick Wall drilling


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