3pcs Trumpet Key Buttom Piston Valve Cap Screw Copper Accessories Part

Features:
3 pieces copper buttom cap for trumpet.
The outside diameter of 21.8mm, inner diameter of 6mm.
Useful and necessary part for replacement.

Specifications:
Material: Copper
Color: Sliver
Item Size: 2.2 * 2.1 * 0.6cm / 0.8 * 0.7 * 0.2in
Item Weight: 29g / 1oz
Package Size: 6.5 * 2.1 * 0.8cm / 2.5 * 0.8 * 0.3in
Package Weight: 30g / 1.1oz

Package List:
3 * Buttom Cap