Grip 35394 4 Piece Imperial Glass & Tile Drill Bit Set

Designed for safe, smooth and efficient drilling of glass, glass bricks, ceramic tiles, hard plastics, vitrolite, china, fibreglass and more. For use with standard or power style drills with no hammer action, light pressure and low rpm speeds. The use of turpentine for cooling and lubrication during this process is highly recommended as dry drilling will cause premature wear to the drill bit and compromise  the longevity of the product.

FEATURES:

• Manufactured with hardened, heat treated steel shafts 
• C2 grade tungsten carbide  spear-point  shaped drilling tips
• Drill size stamped on shank 

• Drill sizes (4 pieces) 1/4" , 5/16" , 3/8" , 1/2"
• Weight(nett): 130g