The M2 Chain Hook, or chain grabber securely latches to the chain even when chain is unloaded, making it much safer than standard chain hooks that often fall off. The M2 Hook is made from 2205 Duplex, thus withstanding the harsh marine environment and is the strongest hook on the market. The chain grabber is safe, designed to be as strong as high test chain. Ideal for use with a snubber or a bridle. Fits BBB, Proofcoil, Hi Test and Stainless Chain. Available for 1/4, 5/16, 3/8, and 1/2 inch chain.