【 Material Performance 】 -5/16 clevis slip hook is made of low carbon alloy steel and has been heat treated. Surface coated with colored zinc treatment, smooth without burrs. G70 rating is more reliable than lower rating. [G70 Clevis Hook] - Heavy duty alloy steel hook with a reliable Grade 70, 5400lbs safe working load, thickened treatment, strong toughness and corrosion resistance, can cope with a variety of harsh environments 【Safety Latch Hook】- Slip hook with a strong safety latch latch for drop prevention and quick use, easy to operate with one hand. And each hook comes with an extra 2 pins, easy to change. 【Reliable Safety】 - Surface with grade lettering, 4:1 safety factor. The maximum breaking is 18000lbs, and it is forbidden to exceed the maximum breaking force or exceed the safe working load range several times during use 【Widely Appolication】 - Safety chain hooks are used as the end of transport chains for load binding applications. Quick and easy connection between trailer and trailer safety chain for towing, trailers, fishing boats, trucks, tractors, etc. 5/16 Clevis Slip Hook