A 289-0812C 1/2" PUSH-LOCK x 1/2" SAE 45° / JIC Dual-Seat Female Swivel 90° hose barb fitting is a type of hydraulic fitting used to connect a hose to a hydraulic system. It consists of a hose barb with a 1/2" diameter, a female swivel fitting with both a SAE 45° and JIC (Joint Industry Council) dual-seat design, and a 90° angle for ease of installation. The hose barb end of the fitting is designed to securely grip onto the inside of a 1/2" hose using a push-lock mechanism, eliminating the need for clamps or ferrules.