Made In USA. Melling timing set includes timing chain (1), camshaft sprocket (1), and crankshaft sprocket (1) for 3 pieces in this kit. Made In USA. Melling timing chain kits provide an efficient and economical way to provide the timing components needed for a quality engine rebuild. Timing chain options include both standard and roller chains to provide matches with the high quality sprockets and i f necessary tensioner and guides that fit the application. Both OEM and performance timing chain kits are available. Melling chains and sprockets are manufactured using the highest designs, quality materials and w orkmanship. Melling chain kits offer you the coverage and choices of standard, HD and performance to fulfill your timing needs at every service level.