360° Heavy-Duty Swivel Grease Coupler swivels a full 360° circle and locks in place. Natural alignement 45° angle gives easy access to most grease fittings. The 1?8" NPT female inlet matches standard hand operated grease guns. The jaws are fully hardened for extended service life along with a wetal seal for increased resistance to wear. The spring-loaded ball-check valve helps retain pressure, and it is rated up to 7,000 PSI working pressure for your applications. For John Deere hand-operated grease guns TY26517, TY26518, and TY26200.