Jingyi Stainless Steel Spring Snap Hook 6 Sizes From 1/8"to 1/2" Stainless Steel Spring Snap Link Hook -Choose From 6 Sizes 40mm to 140mm Versatile binding, rigging & anchoring hardware - quick connect/dis-connect of ropes, chains, straps Push gate in to open - auto-close spring gate with interlock tooth (not on 5mm) prevents force open Choose link size x length: 4 x 40mm (5/32 x 1-1/2"), 5 x 50mm (3/16 x 2"), 6 x 60mm (1/4 x 2-1/3") 8 x 80mm(5/16 x 3"), 10 x 100mm (3/8 x 4") and 12 x 140mm (1/2 x 5-1/2"). See desc. for load limits