Sealey Valve Seat Cutter Set 10pc VS1823Suitable for re cutting inlet exhaust valve seats concentric to the valve guides. Features tungsten carbide cutting blades, expandable pilots and double end cutters for increased application. Supplied in storage case. Cutter Sizes: 28 37mm; 30, 45 and 75, 37 44mm; 75, 37 46mm; 45 and 60. Specifications Detail Suitable for re cutting inlet exhaust valve seats concentric to the valve guides. Detail Features tungsten carbide cutting blades, expandable