ATI PERFORMANCE BBC 7in Harmonic Damper SFI 918871E

ATI PERFORMANCE Harmonic Balancer - Supercharged Super Damper - 7.074 in OD - SFI 18.1 - Steel - Black Oxide - Internal Balance - Big Block Chevy - Each.
6 BOLT HUB THE HUB HAS 1) 3/16 KEYWAY AND 1) 1/4 KEYWAY