Bonded Diamond Drills Core Drills - Unmounted Core Drills - Mounted Twist Drills New Products For June 3/8" Tile, Granite bit $70.00 1/4" Tile, Granite bit $70.00 3/16" Tile, Granite bit $70.00 1/8" Tile, Granite bit $70.00 5/8" Twist Drill $32.00 9/16" Twist Drill $30.00 1/2" Twist Drill $29.00 3/8" Twist Drill $32.00 1/4" Twist Drill $19.00 1/8" Twist Drill $15.00