HNBun 14pcs 5/16 Inch 8mm Screw Pin Anchor Shackle, Heavy Duty Bow Shape Load Clamp, Stainless Steel D Ring Shackle for Chains Wirerope Lifting Paracord Outdoor Camping Survival Rope Bracelets Feature: -The D Ring Shackle is made of 304 stainless steel, rust resistance and corrosion resistance, and can resist sea water and ultraviolet rays -One-way screw, bolt design is more robust compared to traditional plastic buckle, easy and convenient to use --Heavy duty tow shackle can support 1168lbs items, can be used in used in loading and unloading of goods, mining equipment, forestry machinery, land transportation, hoisting machinery and etc Specification: Color: Silver Material: 304 stainless steel Size: 5/16 inch (8mm) Max Open Width: 3/5" (17mm) Working Load Limit: 530kg / 1168lbs Breaking Load: 2200kg / 4850lbs Package Include: 14 x 5/16"(8mm) Screw Pin Anchor Shackle