1 1/4" Full Bullnose Router Bit marble Concrete 2" Grinding Drum 5" Convex Blade
(c) 1 Piece of 2" / 50 mm Diamond Zero Tolerance drum for sink basin hole grinding / cutting (5/8"-11 Thread arbor). (a)1 Piece of V30 (30 mm / 1 1/4 ", for 30 MM THICK OR HIGH STONE CONCRETE).