Reins-man Charmayne James C11 Rosebud Shank Curb Bit. 5" mouth with 1 1/2" port with copper cricket roller. 7 1/2" cheeks. Copper covered 1 1/2" Port. This bit is well balanced with a copper covered cricket roller to help keep the busy mouthed horse occupied. Has a great feel and puts a lot of rate on the finished horse. The copper roller and sweet iron mouthpiece increase salivation which promotes relaxation.