VALVE SEAT CUTTER by Ckc engineering Howtouse(190) ABOVE THE HEIGHT OF THE CUTTER BODY. WITH THE 1 9/16 & 1 5/8 APPROX. OD SIZE OF THE CARBIDE CUTTERS, BEING MEASURED WITH A SET OF DIAL CALIPERS. Blocks, cutter, cylinder, guide, heads, kwik, model, portable, seat, valve.