Tuba Mouthpiece Lube Master ''Super G'' by Monster Oil New Retail Price: ¥33,550 This is a mouthpiece sold by the Monster Oil brand. Inner Diameter: 32.80mm Cup: Medium Shank: American There are scratches from use, but no dents on the shank, and it has never been dropped. The seller is a tuba player. This is developed based on the so-called Geib model. It's similar to the classic Silky Geib model, but the weight balance seems to be more towards the rim. When trying to play compactly, it feels easier to capture the core of the sound compared to Silky, etc. It should be usable from a regular-sized rotary tuba to a York. Those who are comfortable with Silky Geib or Laskey 30G are worth trying this. No box, mouthpiece only. It's a good mouthpiece, but it's not widely distributed, and used ones are rare. Don't miss this opportunity.