• Premium Grade Pro Series Flywheel bolt kit
• 200,000 psi rating
• Forged from aerospace alloy & heat-treated prior to thread rolling
& machining
• 12-point head design & larger than stock shank diameter for increased strength & improved flywheel register
• Under Head Length: .725
• Thread Size: 7/16-20
• Set of 6
• Application: Chevy 90° V6 & 305-502 V8 with 1-piece rear seal