Trombone Mouthpiece for Large Bore Manufacturer: GRIEGO Model Number: CS5 (Rim Inner Diameter/25.50mm, Throat Diameter/7.21mm, Weight/178.6g) This is the model included with Getzen trombones. While treated as an accessory in Japan, it is normally sold as the CS model by Getzen overseas, and is a popular mouthpiece with good quality. It was used as a main mouthpiece, so there are small dents and scratches that do not affect normal use. Please check the condition carefully before purchasing.