Female Thread Size: M5 Ring Inner Diameter: 13.5mm / 0.53"; Overall Height: 23.4mm / 0.93" < p>Made of 304 stainless steel, rustproof, corrosion resistant and durable Designed to be screwed onto various lengths of threaded rods or bolts to secure or lift objects Widely used in many marine and industrial applications and typically used to connect cables or ropes to objects