400304: TROCK EVO LAPPING RING--USED TO FLATTEN WARPED CYL. SURFACES FOR BETTER SEALING (OEM: 400304)
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See in 2011 Catalog
Laps 31/2" and 35/8" cylinders to obtain a flat sealing surface to avoid blowing gaskets. This is a double sided lapping ring that cuts fast with minimum effort. Complete with instructions and lapping compound.
Shipping dimensions: 6.75" x 7.00" x 5.00"
Approximate Weight: 7.94 lbs
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