Clear anodized Ford Cleveland / Midland adjustable timing pointer for 6.300" to 7.074" O.D. harmonic balancers. - Fits all 351C, 351M, 400 Ford Cleveland / Midland engines - Adjusts from 6.300" to 7.074" O.D. harmonic balancers for minimum amount of clearance between pointer and balancer for super accurate tuning.