Male Thread Size: M4 x 11mm (DL) Ring Outer Diameter: 19mm / 0.75 Inch; Ring Inside Diameter: 11mm / 0.43 Inch; Overall Size: 30x19mm / 1.18x0.75 Inch(HW) The lifting eye bolt is made of 304 stainless steel for good corrosion resistance and durability Lifting Eye Bolt - Connect the securing eye to the structure so that slings or other hardware can be lifted Application - To secure a camping tent, fix a small shelf on the wall as a storage tool, use as tie-downs for a truck rack, lift bird feeders, use with a hammock Muilpurpose - Tensioning wire ropes, fixing loads Secure a camping tent Used these lifting eye bolts as tie-downs for a truck rack Usually used to hold a cable or chain, such as cloth rope Use it to fix a small shelf on the wall as a storage tool