SB20 (System Blue)
See my item ID# 16196 for a YEP-201/201M and ID# 16029 for a YEP-202M and YBH-301M Marching Baritone and Euphonium Repair Kit
This unique balance cleans the valve or rotor while lubricating so that the player can keep on playing
Custom & Xeno Cornet and Trumpets YTR-8335
Yamaha Sousaphone / Tuba (1987-), Valve Repair Kit, 3 or 4 valve Mute Cork SB20 (System Blue)Yamaha OEM 3 valve Tuba & Sousaphone YBB & YSH after 1987, valve tune up kit. 3 each guides, springs, valve stem felts & pads, top cap felts & pads, valve guide washers & 2 each water key corks. Yamaha OEM 4 valve Tuba, such as the post 1987 YEB 321 & YBB 321 after 1987. 4 each guides, springs, valve stem felts & pads, top cap felts & pads, valve guide washers & 2 each water key corks. If in doubt or you have a pre 1987 YBB 321, contact me.