Feature: 3.Made of brass material,Silver Plated Horn Mouthpiece4.Bass Trombone Mouthpiece Musical Instrument Accessories5.The most precise mouthpieces are produced by computer-aided design system and computer controlled lathe workSpeifications:Color:SilverMaterial: BrassSurface: Silver platedBrand name: BQLZRTaper: 1:20Length:Approx. 82mm/3.22InchSocket Size:Approx. 12.7mm/0.5InchCup outer diameter:Approx. 37mm/1.45InchCup inner diameter:Approx. 25mm/0.98InchConnector outer diameter:Approx. 12.7mm/0.5InchTotal Size: Approx. 82 x 37mm/3.22 x 1.45Inch(L x OD)Weight:900gPackage includes:5 x Trombone mouthpiece Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin