Pontiac V8 Heavy Duty version of the factory Harmonic Balancer. Includes woodruff key.
Alternatives are New GM balancers at about half the money money again.. .. and some standard duty / street units.... Not ALL balancers performance is equal.. but for everyday use or occasional performance use.. this is fine.
Delivery is included on orders over $150 when paid and ordered on line for supply within Australia to a street address.