Master Link is a significant component in the heavy lifting industry which takes roles as a connector or connector between the hook or the lifting hook and also the material that will be lifted later. This tool sometimes used in lifting the upper part or become a center so it can be reattached to many wire ropes or legs like chains. Usually this tool is also used with thimble eye and wire rope. Its function is as a connector or even using hammerlock when it connects by a steel chain. Its comes in various types, sizes, and capacities. Regular inspection and maintenance is required to ensure their safety and efficiency.