Harmonic Balancer Bolt, Hex Head Black Oxide fits BB Chev 1/2-20 Thread x 1.550" UHL With 1/2" Square Drive

Arp Offers A Special Version Of Its Rugged Balancer 200,000 Psi Rated Balancer Bolt That Can Accept Standard 1/2 Drive Ratchet Or Breaker Bar To Facilitate Rotation Of The Crank Assembly.

* 1/2 Square Drive Forged Into Bolt Head, Enabling The Rotation Of An Engine With Any 1/2 Drive Tool

* Made From Heat-treated 8740 Chrome Moly Steel With Heavy-duty Black Oxide Finish