3/4 INCH D-RING
D-rings are advantageous in many ways. For example, if you want to hang a picture on the wall, buy a D-ring of a size such as 3/4 INCH D-RING. Then fasten it with a frame of the picture and turn it safely to the wall. It is not just a use of a D-ring. You can also carry a heavy backpack using it.