Vacuum Brazed Dry Diamond Hole Saws with 3/8 Inch Hex Shank Set Specification: Available Diameter 5mm,6mm,8mm,10mm,12mm,14 mm, Hexagon Shank, Diamond length 10mm Operation: Application: For drilling granite & marble, masonry, concrete, tile/ceramic, glass, hard plastic ...Vacuum Brazed Dry Diamond Hole Saws with 3/8 Inch Hex Shank Set Specification: Available Diameter 5mm,6mm,8mm,10mm,12mm,14 mm, Hexagon Shank, Diamond length 10mm Operation: Application: For drilling granite & marble, masonry, concrete, tile/ceramic, glass, hard plastic..... Feature: Wax inside for cooling, Dry drilling without water Very high efficiency, multi-purpose drilling Long life drilling