A stainless steel weld-on hinge that is 4" long with a 25/64" pin in stainless steel. It also has a stainless steel ring. There is no grease fitting. A pair of these hinges will have a weight capacity of 750 lbs. The barrel of the hinge is 5/8". These hinges are sold in pairs. Receive a quantity discount when you buy 10 or more and 50 or more.