Engineered and manufactured for reliability, these alloy steel flywheel bolts are heat treated to grade 8 specifications for extra strength. Kits are complete with lock washers, where needed, and are black plated to help resist rust and corrosion. Product Features:Alloy Steel FastenersHeat-Treated To Grade 8Resists Rust and CorrosionIncludes Lock WashersBlack Plated Finish