Size: 11/16 in hexOperating pressure: 7500 psi [max]Connection: 1/8 in NPT male inlet adapterEachSize: 11/16 in hexOperating pressure: 7500 psi [max]Connection: 1/8 in NPT male inlet adapterLincoln® Heavy Duty Grease Coupler, 11/16 in Hex, 1/8 in MNPThttp://s7d5.scene7.com/is/image/Staples/s0481340_sc7?$std$http://s7d5.scene7.com/is/image/Staples/s0481340_sc7?$thb$http://s7d5.scene7.com/is/image/Staples/s0481340/Lincoln-Heavy-Duty-Grease-Coupler-11-16-in-Hex-1-8-in/product_855673Lincoln® Heavy Duty Grease Coupler, 11/16 in Hex, 1/8 in MNPT0.00