Bob Avila O-Ring Snaffle Bit with Rebar MouthpieceBob Avila O Ring Snaffle Bit with Rebar Mouthpiece Mouthpiece Width: 5" Bar Width: 1 2" Ring Diameter: 3 1 4" Ring Thickness: 3 8" This snaffle features a 5 1 4 rebar mouthpiece, which offers slightly more texture and control than the standard smooth snaffle, but is not as aggressive as a twisted mouthpiece. No pinch ball connectors and 3 rings finish this very versatile bit.