Jeep 4.0L Inline 6cyl Flexplate Bolt Kit by ARP These premium-grade ARP Pro Series flexplate bolts are far superior to OEM hardware. Forged from aerospace alloy and heat-treated prior to thread rolling and machining, they feature an exclusive, flat 12-point head design and a larger-than-stock shank diameter for increased strength and improved register. Features Flat 12-point head design Larger-than-stock shank diameter Fastener Material:Steel Fastener Finish:Black oxide Fastener Head Style:12-point Thread Size:1/2 in.-20 Underhead Length (in.):0.500 in. Fastener Tensile Strength (psi):200,000 psi Washers Included:No Benefits Increased strength and improved register Applications 1987-2001 Jeep Cherokee 1987-1992 Jeep Comanche 1993-2004 Jeep Grand Cherokee 1987-1990 Jeep Wagoneer 1991-1995, 1997-2006 Jeep Wrangler What\’s In The Box? 6 – Bolts Warranty Manufacturers Standard Warranty