This is a popular model that is said to be particularly complete among Yamaha mouthpieces, which have a reputation for having high processing precision and little variation between individual pieces. We commissioned the famous craftsman Koichi Hoto to process the screw rim so that it could be fitted with a Bob Reeves rim. This product is intended for use by players who normally use Bob Reeves mouthpieces and want to change the tone to suit the performance situation by replacing their existing rims with this product. Please note that there are individual differences between rims, and no matter which rim you install, there will be a slight difference in the inside of the cup. In addition, this product has been subjected to a bending process to make it even more special. The bent mouthpiece points the trumpet's bell upward, and is said to have the effect of reducing pressure on the upper lip and reducing shoulder stiffness, and was favored by famous players such as Miles Davis and Chuck Findley. It is engraved with 14B4 "R" indicating that it is compatible with Bob Reeves, and HIGH/DO indicating that it is a processed product by Mr. Hinoto. Gold plate. There are some scratches due to the shank installation, but there is no plating roughness or shank distortion, and it is in good condition. Please note that the rims shown in the images are for reference only, and only the rims are included in this listing.