ZB6403-87 * â?? [CORROSION-RESISTANT] - To promote long-lasting use and dependable safety, the whole body of this Jaw Swivel Snap Shackle is made of MARINE GRADE stainless steel 304/316. They resist rain, dirt, snow, mud and other corrosive elements, can show their value in extremely bad environment. * [MEASURED DATA] - Approx. If the size of these HEAVY DUTY Quick * â?? [INGENIOUS & PRACTICAL FEATURES] - Swivel bail allows for connection with dynamically moving parts, like spinnaker halyards. Jaw bail with clevis pin for when a line requires frequent removal of the shackle. Jaw bail with clevis pin for when a line requires frequent removal of the shackle. Quick release pin allows the snap bail to be released, even under tension. * [SAFETY WORKING] - Depending on shackle length, the maximum working load is about 650kg . Safe working load depends on application, and even orientation of the shackle under load.