Features: 3.Perfect Suitable for daily maintenance and repair of B-flat trumpet,cornet and B-flat palm.Suitable for most brass-wind instrument, including: trumpet, trombone, horn, Euphonium.4.This is a great upgrade alternative for your Brass instrumentand made of high quality which is sturdy and to use.5.Portable size, convenient for carrying and storage.and the felt washer is soft and smooth, it will not scratch the trumpet.6.Package include: 1 x Mouthpiece Puller; 3 x Spring; 3 x White Felt; 3 x Black Felt; 3 x Trumpet Valve Guide; 2 x Trumpet Valve Cork Pad; 2 x Trumpet Tuning Slide O Ring.Specifications:Mouthpiece Puller Material:Copper & Metal & PlasticTrumpet Repair Kit Material: Aluminum body, galvanized steel handle, plated steel base.Color: MulticolorBrand name: BQLZRSize:Mouthpiece Puller:10 x 3.5 x 10.4cm/3.94 x 1.38 x 4.09inch(L x W x H)Spring:46x8.8MM/1.8x0.35(L x Dia)White Felt:15x5MM/0.59x0.19Inch(OD x ID)Black Felt:18x9MM/0.7x0.35Inch(OD x ID)Trumpet Valve Guide:18x11x4.5MM/0.7x0.4x0.17Inch(L x W x Inner Dia)Trumpet Valve Cork Pad:3x8.9MM/0.11x0.35Inch(H x Dia)Trumpet Tuning Slide O Ring:12x10MM/0.47x0.39Inch(OD x ID)Weight: 293gPackage include:1 x Mouthpiece Puller3 x Spring3 x White Felt3 x Black Felt3 x Trumpet Valve Guide2 x Trumpet Valve Cork Pad2 x Trumpet Tuning Slide O Ring