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ARP Stainless/s Header Bolt Kit 12P, 5/16 Wrench 3/8 in.-16, 1.00in # 400-1210
Fastener Style:Bolt
Thread Size:3/8-16 in.
Head Style:12-point
Underhead Length (in):1.000 in.
Underhead Length (mm):25.00mm
Fastener Material:Stainless steel
Fastener Finish:Polished
Quantity:Sold as a set of 16.
Notes:5/16 in. wrench head size.