Spring Height Micrometer For 1.600″ to 2.100″ Valve Springs

1.385″ ID w/ 3/16″ and 1/4″ Keyways Aluminum _______________________________________________ Features: Fits Small Block Ford, Buick and Pontiac Engines Fits 1.385 ID Crank Snout with 3/16-in. and 1/4-in. Keyways Made from High-Quality Aluminum Natural Finish 1/2-in. Drive for Use with Breaker Bar or Drive Ratchet Sold Individually PART# 66900