Handmade Dutton, Light severity, three piece mouth with 3/8″ inlayed copper bars, 1-1/2″ copper wrapped dog bone center. This is a nice mouth piece to reach the outside pressure points of the bars, and being a three piece mouth, it allows for tongue relief. Has inlayed copper bars. This is MY second favorite mouth, after the dogbone with copper rollers. Works really, really well on nervous fillies- love this mouth.