Dart Red Ten 6mm Mini Diamond Porcelain Drills

This drill bit features high grade exposed diamond for fast fast smooth cutting with no drill guide required. It also provides excellent performance on cordless and corded drills (1500 - 2000rpm) and should be dipped in water before drilling and every five seconds after for a prolonged life. This bit is designed for use with very hard tiles, porcelain, ceramic, granite, marble, glass, slate & stone.