1.HEAVY DUTY MATERIAL - Made of high quality stainless steel, the quick link is rust and corrosion resistant, featuring high strength and not easy to break. Its compact and functional design makes it easy to carry. It is ideal for indoor and outdoor use. 2.WHAT YOU GET - The size of each d shape chain link is 3 x 1.45 inch, the jaw width is 0.45 inch, and the thickness is 5/16 inch. The package contains 20 pack d shape locking hooks with a max working capacity of 1,523 pounds, which is very suitable for towing, swing and tire chains. 3.CONVENIENT AND PRACTICAL - The d shape chain connector can be quickly connected and opened by twisting the hex nut. The thread of the m8 quick link is deep and uniform, and there will be no slipping after repeated use to provide a tight and connection. 4.WIDE RANGE OF USES - Stainless steel quick links are ideal connector hardware for connecting chains or attaching accessories to chains quickly and easily. It is designed for heavy-duty applications and is widely used in outdoor activities such as mountaineering, hiking, camping, fishing, boating, etc.