OPTITORQUE TECHNOLOGIES LLC BBC Damper Bolt Kit 1/2-20 1.550 UHL 10552

OPTITORQUE TECHNOLOGIES LLC Harmonic Balancer Bolt - 1/2-20 in Thread - 1.550 in Long - 5/8 in 12 point Head - Washer Included - Steel - Black Oxide - Big Block Chevy - Each.
5/8 WRENCHING