Operating pressure: 4000 psi [max]Connection: 1/8 in NPT male adapterFor pull-on, push-on or hook-on serviceEachOperating pressure: 4000 psi [max]Connection: 1/8 in NPT male adapterFor pull-on, push-on or hook-on serviceLincoln® Button Head Grease Coupler, 1/8 in MNPThttp://s7d5.scene7.com/is/image/Staples/s0481369_sc7?$std$http://s7d5.scene7.com/is/image/Staples/s0481369_sc7?$thb$http://s7d5.scene7.com/is/image/Staples/s0481369/Lincoln-Button-Head-Grease-Coupler-1-8-in-MNPT/product_772991Lincoln® Button Head Grease Coupler, 1/8 in MNPT0.00