Features:3. Wide application: Trumpet repair set is suitable for three-tone B-flat trumpet and cornet, easy to install and use.4. : This product is exquisite workmanship, strong and wear-resistant, an excellent choice for daily maintenance and replacement of your trumpet instrument.5. Repair parts are not fully guaranteed to fit your small size, please check the size you need before purchasing.6. Our product includes small trumpet drain valve key, large trumpet drain valve key, trumpet valve slide,trumpet valve slide screw,trumpet valve springs, trumpet spit valve cork pad, trumpet drain valve spring, tuning screw, trumpet button.Specifications:Material:copper, metal,plasticColor:MulticolorBrand name: BQLZRSize:Water valve key:Small One: 26.7x9.9x9.4mm/1.05x0.38x0.37Inch(L x W x H)Large One: 47.8x10x8.4mm/1.88x 0.39x0.33Inch(L x W x H)Cork Pad: 3x8.9mm/0.11x0.35Inch(T x Dia)Spring: 46x8.8mm/1.8x0.35Inch(L x Dia)Valve Spring: 16.8x8.4x15.5mm/0.66x0.33x0.61Inch(L x W x H)Reed: 18x11x4.5mm/0.7x0.4x0.17Inch(L x W x ID)Hand Hook: 80x25mm/3.14x0.98Inch(L x H)Hand Hook Screw: 8x9.9mm/0.31x0.39Inch (L x Dia)Tuning Tube Screw: 24x7.9mm/0.94x0.31Inch (L x Dia)Small Screw Length: 1.3cm/0.51InchTrumpet Button:3.3x2.3cm/1.30x0.91Inch(L x W)Weight:104gPackage include:1 x Small Trumpet Drain Valve Key1 x Large Trumpet Drain Valve Key1 x Trumpet Valve Slide1 x Trumpet Valve Slide Screw1 x Tuning Screw2 x Screw2 x Trumpet Spit Valve Cork Pad3 x Trumpet Drain Valve Spring3 x Trumpet Valve Springs3 x Trumpet Valve Guide3 x Trumpet Button