MOTORCYCLE REPAIR TOOL VALVE SEAT CARBIDE REAMER DIAMOND GRINDING WHEEL Valve Seat Cutter Diameter(mm)xAngle: 22×45° 24×45° 27×45° 31×45° 22×58° 24×58° 27×58° 31×58° 20×30° 23×30° 26×30° 30×30° Diamond Lapping Tool Diameter(mm)xAngle:21×45° 24×45° 26×45° 30×45° Cutter Bar: Diameter 5mm, Diameter 5.5mm