COMP Cams 4715 Valve Guide Cutting Tool, Cuts Guide .500 Inch O.D.

COMP Cams .500" Valve Guide Cutter.

Most high performance engines today require the use of larger-than-stock diameter valve springs. This .500" Valve Guide Cutter from COMP Cams will allow the engine builder to machine the cylinder head to the proper size for your spring. Each cutter requires the use of an arbor/pilot, which are available in three different sizes