3 Pcs Trumpet Button Piston Cap Brass Musical Instrument Accessories Bottom Valve Lower Cover & Upper Screw Piston Upper Cover

Description：
-This product is made of steel.
-Trumpet valve screw cover, suitable for replacing and repairing Trumpet valve screw cover.
-High-quality musical instrument accessories, exquisite craftsmanship and easy to use.

Item type: Brass Instrument Accessories
Color：Silver
Material：Steel
Product Size 1：22.9*22.9*8mm
Product Size 2：21.8*21.8*8mm
Package Contents：Trumpet valve screw cover*3