This is a used chain that comes with the a connecting pin, (a pin that is threaded on one end). This chain has a 1/2" pitch is 8" wide and 9 feet long. It also comes with 2 drive sprockets and 2-Idler sprockets. The drive sprockets have 43 teeth are 6-3/8" O.D. plus the teeth and are 4-7/16" I.D. width is 1-1/4". The idler sprockets have 22 teeth are 3-1/4" O.D. plus the teeth and are 1" I.D. width is 1-1/2". All sprockets are made of UHMW or a similar type of plastic.