Universal Water Key Spring, Fits Inside or Outside Key, 1 each

1 each universal Conn, common, water key spring (sits inside of waterkey). Fits many, such as, Bach & Conn cornets, trumpets, 16A, 16B, 18A, & 18B, & euphoniums & tubas.

1 each universal Conn, common, water key spring (sits outside of waterkey). Fits many, such as, Bach & Conn cornets, trumpets, euphoniums, & tubas.