Features:
1.Every product has a unique Manufacturing Part Number label on the inner package that proves it has been qualified,which include Part Number,Model Number and inspection date information;
2.If you have any questions about the item,please provide us the Manufacturing Part Number for checking,your profits will be guaranteed.
3.Suitable for three-tone B flat trumpet/cornet/B flat palm sized piston spring bracket trumpet.
4.High-waisted spring: Tension for contraction. The strength is better and it is more durable.
5.Accurate positioning and guarantee coaxiality, good hand feeling

Specifications:
Material: Copper + Metal + Plastic + Zinc alloy
Color: Multicolor
Brand name: Unbranded
Size:
High waist spring: length about 40mm, diameter 10mm
Cork mat: diameter 9mm, thickness: 3mm
Black felt: outer diameter 18mm, inner diameter 9mm
White felt: diameter 15mm,inner diameter 5mm
Rubber ring: outer diameter 12mm, inner diameter 10mm
Reed support: length 18mm, width 11.2mm, inner diameter 4.4 mm
Trumpets Finger Buttons:1.65 x 1cm/0.65 x 0.39 inch(Dia x T)
Weight: 19g

Package include:
3 x Trumpets Finger Buttons
3 x Trumpet Piston Valve Springs
6 x Trumpet Valve Withe Felt Washers
6 x Trumpet Valve Black Felt Washers
4 x Trumpet Spit Valve Cork Pad
3 x Trumpet Valve Guides
2 x Trumpet Rubber Bumper O-Rings