D604 Glass & Tile Drills Sutton Tools glass & tile drills are designed for smooth drilling in up to Class 3 ceramic tiles, glass, brick, plastics and fibreglass. The unique design with specialised carbide tip and spiral flutes make these drills last 7 times longer and cut 30% faster than a standard glass & tile bit. Note: Not suitable for toughened glass. 4 facet diamond spear point design shaves rather than cuts for improved precision and penetration Stronger carbide tip with copper brazing has better heat resistance and provides 7 times longer life Spiral flute aids dust extraction and reduces heat build-up for 30% faster drilling Longer total length than standard tile bits for deeper drilling Parallel Shank to suit non-hammer action portable power drills Technical Specs: Diameter 4.0 mm O/A Length 80 mm