Glad my link was a help, Carolyn. Just one thing – the clip-on thumbrests are for use with plastic recorders, not wood. I myself scratched a maple Moeck by putting one on it. But I also was successful putting one on a rosewood Dolmetsch (which is why I thought it would be OK on the maple), so the hardness of the wood matters. They do NOT scratch Bernolin resin recorders, by the way, although I did sand down the edges of the thumbrest some before putting it on.