OPTITORQUE TECHNOLOGIES LLC BBC Damper Bolt Kit 1/2-20 1.550 UHL 10558

OPTITORQUE TECHNOLOGIES LLC Harmonic Balancer Bolt - 1/2-20 in Thread - 1.550 in Long - 1-1/16 in 12 point Head - Washer Included - Steel - Black Oxide - Big Block Chevy - Each.