7Pcs 312mm Triangularoverlord Handle Multifunctional Drill Bits

Notice ：can not apply to hand drill with impact
Feature:
Made of fine quality material, low resistance, high hardness, improving work efficiency.
The design of triangle shank makes the clamping more tight and does not slip.
U-shaped spiral groove is smooth and flat, and the drilling is smoother.
Strong toughness and wear resistance, can be installed in electric drills.
Provides smooth and accurate drilling in tile, glass, brick wall, wood and so on.

Specifications:
Material: alloy
: red+silver

Total length:
6mm diameter: 100mm / 3.9in
8mm diameter: 110mm / 4.3in
10mm diameter: 120mm / 4.7in
12mm diameter: 120mm / 4.7in

Working length:
6mm diameter: 55mm / 2.2in
8mm diameter: 66mm / 2.6in
10mm diameter: 70mm / 2.8in
12mm diameter: 75mm / 3.0in

Shank diameter:
6mm diameter: 4.5mm / 0.2in
8mm diameter: 6mm / 0.2in
10mm diameter: 7mm / 0.3in
12mm diameter: 9mm / 0.4in

Package Contents:
5 x 6-12mm Drill Bit





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