These Pro series flywheel bolts from ARP give you all that you need to bolt in your flywheel with confidence. Theyre much stronger than OEM hardware, are forged from aerospace alloy, and are heat-treated prior to thread rolling and machining. These bolts feature an exclusive, flat 12-point head design and a larger-than-stock shank diameter for increased strength and improved flywheel register.Flywheel Bolts, Pro Series, Chromoly, Black Oxide, 12-Point, 3/8 in. x.900 in., Mini, 1.6L, Set of 6Features:Rear Main Seal Style: 1-pieceThread Size: 3/8-24 in. RHUnderhead Length (in): 0.900 in.Washer Included: YesHead Style: 12-point Fastener Finish: Black oxide Fastener Material: Chromoly Quantity: Sold as a set of 6