CHEV EXTNL BALNCE FLXP

Engine Compatibility: Chevy 90 Degree V6 3.3L-4.3L/ Chevy V8 262-454 Cubic Inch Thread Size: 7/16 Inch-20 Under Head Length (IN): 0.725 Inch Finish: Black Oxide Color: Black Material: Chrome Moly Steel Forged From Aerospace Alloy And Heat Treated Prior To Thread Rolling And Machining Feature An Exclusive Flat 12 Point Head Design And Larger Than Stock Shank Diameter Flanged Nut Increased Strength And Improved Flywheel Register Limited 90 Day Warranty