Feature: Made of metal material, durable and long service life for the car engine. It is a good replacement for the old or broken one. Match for the original one. The cylinder head stud is used on the engine to make sure the car's engine works well. This is a non-OEM product, accessory only! Specification: Condition: Brand New Material: Metal Color: Black Short Stud Thread Size: 7/16-20 UNF, 7/16-14 UNC Short Stud Size: 7.7x1.1cm / 3.03"x0.43"(L*D) Long Stud Thread Size: 7/16-20 UNF, 7/16-14 UNC Long Stud Size: 11.9x1.1cm / 4.69"x0.43"(L*D) The Longer Stud Thread Size: 7/16-20 UNF, 7/16-14 UNC The Longer Stud Size: 13x1.1cm / 5.12"x0.43"(L*D) The Longest Stud Thread Size: 7/16-20 UNF, 7/16-14 UNC The Longest Stud Size: 15.5x1.1cm / 6.1"x0.43"(L*D) Nut Inner Diameter: 10mm / 0.39" Nut Size: 11x18mm / 0.43"x0.71"(H*Max.D) Washer Inner Diameter: 11mm / 0.43" Washer Outer Diameter: 20mm / 0.79" Fitment:for Chevy BBC 454Note: Please make sure your car model before ordering. Professional installation is recommended, please install the product in the right way. (No instruction include) Package Include: 32 x Cylinder Head Studs 32 x Nuts 32 x Washers
