Description of π BGTEC Diamond Granite, Masonry, and Concrete Surfaces
diameter 6mm 1/4 Inch,diamond length 8mm,Round shank. Multi-purpose drilling for granite & marble, masonry, concrete, tile/ceramic, glass, hard plastic,All-Purpose Drilling. Wax inside for cooling,our Diamond Tipped Drill Bits have wax cores built-in for Cooling and Lubrication.Special Designed with Hole and Groove in the Side of Drill Bit for Removing Stone Chips. Dry drilling without water,Use water for longer time. Vacuum Brazed diamond technology provide very high efficiency,cuts faster,durable and sturdy.