Tom Balding Medium Twisted Wire is a satin finish with out copper inlays with a loose ring. The mouthpiece is the Tom Balding twisted wire. This has a mouth piece of 5 1/8" and a ring diameter of 5/16" . 

Tom Balding

Medium

Twisted Wire

Satin Finish

Loose Ring

Snaffle Bit

5 1/8" Mouthpiece 

5/16" Ring Diameter