Allstar ALL90027 Black Anodized Finish Adjustable Type Timing Pointer for Big Block Chevy with 8" Diameter Harmonic Balancer Timing pointer is an adjustable type and fits big block Chevy engines with a fluidampr harmonic balancer of 8 inch diameter Pointer is black anodized and made from billet aluminum Timing pointer is adjustable for very precise timing increments Sold each Backed by a 90-day limited factory warranty