Xdovet Dry Diamond Drill Bit Sets Hex Shank 6Pcs 1/2" to 1/4" Core Drill Bits for Granite Marble Porcelain Glass Lenses Tile etc - Blue
From Macy
s
Professional Technology: Dry diamond drill bit set uses vacuum brazing technology, diamond grit can be adsorbed on the core rod with stronger wear resistance. The hex shank can be compatible with hand drills, bench drills and other machines.
