D-shaped double bar ring, commonly known as reducer buckle, six angle ring, or plastic adjust ring, has two different width (1" & 1 1/2") at once, which flexibly accommodates wide applications.
Strap reducer buckle to join together two different width of webbing, size: 1 inch to 2 inch, which provides lots of versatility for the slings that go from one size of webbing to another.