Kuryakyn Kool Caps Engine Kit For Harley Milwaukee Eight Kool kaps cover the unsightly and unfinished bolt heads, making a smooth finished appearance. Installs easily over the heads of the existing bolts. Features: Complete sets available to cover engine, cam cover, transmission and primary cover Engine kit consists of: (10)-5/16 socket head caps, (36)-1/4 socket head caps, (6)-5/16 hex head caps, and (10)-1/4 hex head caps