CM Super Strong Shackles are carbon-type shackles with strength ratings that are 17 to 50% stronger than comparable sized carbon shackles, and they boast a strong 6:1 safety factor. Manufactured from technically advanced micro alloy steel with optimal hardness for strength and ductility, these shackles will show major deformation prior to failure. The Working Load Limit (WLL) and product traceability codes are permanently marked on each shackle body. All sizes feature quenched and tempered pins. Available in different configurations upon request (including bolt type, chain type, self-colored or painted).