5/16" Max Snap AllowanceClosed Eye: 1/2" DiameterOverall Length: 3"Material: Zinc Die CastFinish: Nickel PlatedSafe Work Load: 45 lbs.Deigned For Use With Rope, Chain, Strap, Animal Leashes And Other Home, Farm And Recreational ApplicationsStainless Steel Spring With Easy Bolt Retraction Pull Down TriggerDo Not Use For Overhead Lifting Or Support Of Human Weight