These trunnion connectors are billet machined from cold rolled steel (1018) rod. They are 1.322 inches total length with the smooth pin being .544” L X .375” OD with a .093” cotter pin hole. the threaded side is 5/16-18 thread and the nut is a flanged, serrated nut (not as shown) for excellent retention of the adjusted position of the shift rod. There is an anti-rotation flat machined into the connector to prevent it from turning in the slot during tightening or loosening. This is a hard to find, quality piece used on many manual transmission shift linkages for lots of different cars or trucks.