Pontoon boat gate latch works with our standard piano hinge. Can be used on both left and right hinged gates and prevents them from swinging inward, sold individually. Fits 1", 1⅛”, & 1 ¼" square tube pontoon fence railing. Nylon molded plastic will not break, has stop for outside of railing so gate will not go past parallel, quarter turn to lock/unlock and open/close the gate. Available in either gray or black to match your fence railing. You can find our standard aluminum piano hinge here.