Chrome Valve Cover Bolt This Chrome Steel Hex Head Bolt Kit is Made of chrome steel, it has abrasion resistance and corrosion resistance.durable and long service life for the car engine.This is vehicle specific product, please make sure your car model before ordering. Our Chrome Steel Hex Head Bolt Kit fits all FORD 283 302 305 307 327 350 383 400 engines. Small block CHEVY Valve Cover Bolts Set, with PHILLIPS head on one end for easy install,can meet your different needs. 1 Set of 8 premium quality chromed steel hex head bolt kit.Bolts are 1/4" - 20 Thread pitch, Bolts measure 1 3/8 Inch length,studs measure 1 1/4" In length.