Anchor Shackle With Screw Collar Pin is used as a connecting link in all manner of rigging systems. A shackle, also known as a gyve, is a U-shaped piece of metal secured with a clevis pin or bolt across the opening, or a hinged metal loop secured with a quick-release locking pin mechanism. They are used as a connecting link in all manner of rigging systems, from boats and ships to industrial crane rigging. US Type Shackle G209 G210 drop forged shackle screw pin anchor shackle Standard:US Type Shackles. Size: all kinds of sizes matarial: Body material is 45# steel and screw pin is 40Cr Surface:Electro galanized,Hot dipped galanized or on customers' special requirement. Special specification and marks can be made according to customers requirments. Working Load Limit (t):9.5*4 Maximum Proof Load is 2.2 times the Working Load Limit. Minimum Ultimate Load is 6 times the Working Load Limit. Professional manufacture rigging factory. Standard