National Hardware's 5/8", Stainless Steel D-shackles shackles are used in a number of different rigging and load securement applications to connect different types of lifting slings, chain, or rope to an object or to each other. Marine Grade and manufactured from stainless steel for durability. Easily installs with included removable screw pin. Designed for multi-dimensional pulling applications which can be used to attach on hoists, clamps, slings and other lifting equipment. A shackle is a u-shaped, load-bearing connecting device designed to be used with a removable pin. Heavy Duty Rating with 5,000 lbs. Safe Working Load, always follow safe working load (SWL) limits included on packaging. National Hardware's Lifespan Limited Lifetime Warranty.