This Professional's Choice D ring is made from 5/16" diameter material and has an outer diameter of 2 7/8". The 5/16" material adds a little more weight which helps the stability and release.
The mouthpiece is made of ½” sweet iron and has three equal breaks. This allows for tongue relief, while intensifying the pressure on the outside of the bars.
Technical Description
Rings of 2 1/2''
Mouth of 5 1/4''
Professional's Choice
