Partrade Calvary Shank Grooved Mouth Western Bit w Rollers at the Rein Ends 

5" mouth...front side is smooth, the back side is grooved.   8 1/2" stainless steel cheeks.  

This is a very neat bit....there are rollers at the rein ends...I have never seen this before and not sure what the purpose of it is.  

I will combine shipping on all items purchased.