20j 20k valves
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saxophyte
- bugler
- Posts: 207
- Joined: Thu Aug 26, 2010 7:47 pm
20j 20k valves
I have a bag of 20j 20k valves.How can I tell which are for sousaphone .I do not have a 20k or 20j to try them out on. some are longer than others measuring 3.57inches long.