This strong dee ring is made of zinc-plated steel. The stable D ring has an inner diameter of 1-3/4". The welded D ring is ideal for use as a fabric strap fastener, boat top fitting, shade sail connector, carabiner, or tie-down anchor to secure cargo. The D-ring fastener can be used with other metal fittings for various connecting and anchoring purposes. Save by purchasing metal D rings in bulk.