Schilke Silky / Genuine Water Key Spring for SP Trumpet (1 piece) Pop Guard While the QAC-222 is centered

While the QAC-222 is centered around the HC-OFC conductor

the Diplomat film is thinner

it is also highly durable

Output impedance: 100Ω ±30% (at 1 kHz)

Schilke Silky / Genuine Water Key Spring for SP Trumpet (1 piece) Pop Guard While the QAC-222 is centeredSchilke (Silke) Genuine Water Key Spring SP for Trumpet This is a genuine Schilke trumpet water key spring. This product can be used on items with a silver plated finish. It's ideal as a replacement for parts that have deteriorated or been damaged over time. *Please note that there may be slight differences in the length and shape of the springs depending on the production batch, but this will not affect their functionality, so please use them with