Gundlach 1-1/16" (28 mm) Diamond Glass Core Bit

This Montolit Diamond Core Bit is made in Italy and is specifically designed for drilling glass tiles and soft ceramic tiles. Bit must be used wet and the?No. AUFA-ADPTR?M16 x 2 mm to 3/8" Chuck Adaptor is required for use with a drill. Bit cannot be used with a hammer drill.