TROCK EVO LAPPING RING--USED TO FLATTEN WARPED CYL. SURFACES FOR BETTER SEALING---CALL US IF YOU SEE, "CALL TO ORDER"---973-291-8588---WE CAN GET ONE TO YOU.
Source: Custom Chrome
Laps 3-1/2" and 3-5/8" 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 lapping compound.