This D ring is made from 5/16" diameter material and has an outer diameter of 2 7/8". This D ring is slightly more compact than a normal 3 1/2" D ring. The 5/16" material adds a little more weight which helps the stability and release. Two-piece twisted wire mouthpiece is more aggressive than a smooth mouth.
Mouth: 5 ¼” Rings: 2 ½”