It was easy to clip on. Playing is easier with the clip in place. It arrived promptly.
It fits my Yamaha YRT304BII Tenor Recorder perfectly. Pushed on easily, easy to adjust to where I want it, stays put in use. Arrived in 2 days as I recall.
It fits perfectly
I am new to the tenor recorder and find it difficult to hold. The thumb rest is such a great help - the instrument is now more stable as I play.