(a) 1 Piece of V20 (20mm / 3/4″ Full Bullnose) Diamond Brazed. (b) 1 Piece of V30 (30mm / 1 1/4″ Full Bullnose) Diamond Brazed. (c) 1 Piece of V40 (40mm / 1 1/2″ Full Bullnose) Diamond Brazed.