D shackle is a U-shaped piece of metal with a screw pin used to secure a rope or chain to one end of another rope or chain. The “U” shape of the shackle allows it to be easily attached to anchor points, making it a versatile and necessary tool in a variety of applications such as rigging, towing, and securing loads.

When choosing a d shackle, it is important to consider the strength and load capacity required for the intended use. Shackles are typically labeled with their weight ratings, which should not be exceeded.