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BBC; 0.030 Inch; 4

SBC; 0.030 Inch; 4

1957-1997 Chevy Small Block/ 1968-1977 Pontiac 350; 0.316 Inch Outside Diameter; 0.629 Inch Length; Set of 2

1965-1997 Big Block Chevy; 0.646 Inch Outside Diameter x 0.496 Inch Inside Diameter; 0.503 Inch Length; Set of 2