Allstar ALL90023 Black Anodized Finish Adjustable Type Timing Pointer for Small Block Chevy with 6-1/4" Diameter Harmonic Balancer Timing pointer is an adjustable type and fits small block Chevy engines with a fluidampr harmonic balancer of 6-1/4 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