HSS DRILL- Glass Drill Bits 08

* Spear point reduces cutting pressure for cleaner holes. * Cuts a perfectly round hole without chipping or breaking. * Best result with lower rpm and good cooling with water, vinegar and turpentine. * For use with rotary drills only. * For drilling glass, tile, mirrors and ceramics. * Grooved hex shank prevents slipping in drill chuck or bit extension. * Fits all standard 1/4" quick change chucks. * Drill Set are available. Fractional Sizes (inch): Item No. Dia. Over Length