Glass Drill Bits with zinc coated (TG-GD-ZC)

1. Material: YG8C, 45# steel carbide.
2. Size: 3-16mm, 1/8"-3/4"
3. Surface: sand finish; Chrome plated;Zinc coated
4. Packing: PVC bag, PVC tube, plastic clip, hang tag, card blister, double card blister for choice.
5.Spear point reduces cutting pressure for cleaner holes.
6.Cuts a perfectly round hole without chipping or breaking.
7.Best result with lower rpm and good cooling with water, vinegar and turpentine.
8.For use with rotary drills only.
9.For drilling glass, tile, mirrors and ceramics.
10.Drill Set are available.