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This COMP Cams 5/16" arbor/pilot centers spring seat and valve guide cutters for use with 5/16" valve stems. It is required for COMP spring seat cutters and valve guide cutters and is also compatible with tooling used to shorten guides for high-lift cams or to install COMP PTFE seals, ensuring accurate alignment during cutting operations.
COMP Cams 5/16 Arbor (For Cutters)
