Made of high-quality high-speed steel that is hard and sharp enough to drill through wood, plastic, steel and sheet metal
Optimized for impact driver usage, automatically deburr holes as you drill
Ready to use in a thin iron plate, aluminum, insulation panels, PVC panels 4mm thickness within the timber.
3 standard SAE step drill bits can drill 28 different sizes of holes on different thickness of materials.

Specification:
Measurement System: inch
Item Weight: 3.8 ounces
Model: DWB14
Color : Metallic Golden
Material : High speed steel
Shank :1/4" Hexagonal (6.35 mm)
Surface treatment: Titanium coated (10nm)
Lenght, Dia & steps:
Six step bit: 3/16", 1/4", 5/16", 3/8", 7/16", 1/2" drilling diameter, up to 3/8" depth of each step
Nine step bit: 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4" drilling diameter, up to 3/16" depth of each step
Thirteen step bit: 1/8", 5/32", 3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 13/32", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 13/32", 7/16", 15/32", 1/2" drilling diameter, up to 1/8" depth of each step

Features :
Titanium coated surface can reduce friction and overheat when drilling through the material for a longer lifetime.
Two-flute design provides faster, smoother and accurate cutting
1/4" hex shank (6.35mm)can be easily fit into power driver, drill and press drill.
Used to cut holes in a variety of material like thin steel & iron, wood, aluminum alloy, insulation boards, PVC sheet, Concrete.

??te:
Star drilling at low speed. Do not push too much. Let the drill bit to cut by itself. ¨
The harder the material it is working with, the lower speed shall be applied.
Inject coolant oil while working, it will dramatically increase the drilling efficiency and extend the drill bit lifetime
Drill bits are good for wood, plastic, steel and sheet metal drilling. Stainless steel is not recommended.

Package Included :
1pc x 3/16"- 1/2" Step Drill Bit
1pc x 1/4" - 3/4" Step Drill Bit
1pc x 1/8" - 1/2"Step Drill Bit


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