45º Kwik-Way Cool Blue Valve Seat Stones from $14.99. 40 Grit Silicon Carbide Cylinder Head Resurfacing Belts from $34.99. 80-Grit Silicon-Carbide Cylinder Head Resurfacing Belts from $33.99. 30º Kwik-Way General Purpose Valve Seat Stones from $16.99. GV-280 | 7"x1"x7/8" Offset Valve Refacer Wheel $89.99.