James’ unique Harley Knucklehead head gaskets are 0.020" thick dead-soft copper embossed to provide a tight seal. Application-specific base gaskets are patented beaded rubber-covered metal. It is this bead that provides additional elastomer to seal the split between the crankcase halves. Additionally, the rubber-covered metal gasket material provides excellent sealing characteristics and exceptional torque retention. At just $24.95 these gaskets are an inexpensive way to ensure a leak free, perfect seal when reinstalling that beautiful top end on your Knucklehead Harley. Purchase from J&P, Dennis Kirk or call 775-246-2220 for a dealer near you. You can also email james at email@example.com or catch them on line at jamesgaskets.com.