This is a spring for a V. Bach water key. In its original state, the straight part is hooked and cut, but this one has the tip rounded like the YAMAHA artist model. Each one is rounded by hand, so the roundness varies slightly, but the size of the rounding is almost the same. Multiple purchases are also possible, so please inquire. The sound's core and outline become clearer, and the unevenness of the sound from top to bottom decreases. *Can also be installed on YAMAHA artist models (images 4, 5). The impression is that the sound's outline is slightly sharper and the core becomes thicker than the YAMAHA genuine spring. *If you let me know in the comments that you would like to purchase multiple items, I will create a dedicated page. *We have stock and can ship immediately (we can also make them if we don't have stock, so please feel free to contact us). Type: Trumpet Type: Trumpet (in C / B flat) Brand: Bach