COMP Cams spring seat cutter (sold separately) requires the use of an arbor/pilot, which is available in different sizes. These COMP Cams arbor/pilots also work with valve guide cutters (sold separately) used for shortening the guide for a high lift cam or installing a COMP Cams PTFE seal for oil control.

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COMP Cams Valve Guide Cutter - .530 in. O.D. Guide

COMP Cams Valve Guide Cutter - .530 in. O.D. Guide

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COMP Cams Stud Boss Cutting Tool, Steel, Carbide Tipped, Includes Arbor/Pilot, Each

COMP Cams Stud Boss Cutting Tool, Steel, Carbide Tipped, Includes Arbor/Pilot, Each

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Powerhouse Spring Seat Cutter for 1.580 OD.

Powerhouse Spring Seat Cutter for 1.580 OD.

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