This is a mouthpiece designed from the ground up by SMK Craftworks, for horn players, by horn players. It has a good sound attack and is easy to control. [Brand] SMK Craftworks [Model Number] SMK-750T-SV [Shape] Cup Inner Diameter: 17.5mm Throat Diameter: 4.0mm Cup Shape: U Cup Depth: Shallow Rim: Thin Shank: 3/100mm [Surface] Silver-plated finish Free shipping nationwide *Shipped via Yu-Packet Post Mini