Not sure why I can’t find this info somewhere online, but it’s eluding me! Does anyone know the difference between the S1L and C15.5 Thein leadpipes? I have a Universal I tenor that came with the S1L (which is almost 10” long) and I’m just wondering what the C15.5 characteristics are.

The Houghton horns site references a leadpipe chart, but the link they provide is dead.

Best to email Thein. They are quick to respond and really helpful!