BUCK ALGONQUIN 7/8 IN PROP SHAFT KIT PSK875 Prop Shaft Kit 7/8 In | Buck Algonquin PSK875 7/8 in. Propeller Shaft Kit Kit includes a full nut, jam nut, keystock and cotter pin 7/8 in. shaft size 5/8"-11 full and jam nut thread size 1/4 in. x 1 25/32 in. keystock dimensions 1/8 in. x 3/4 in. cotter pin dimensions