This is a lefreQue I purchased for my trumpet (unlike the Japanese page, the manufacturer's website recommends 41mm). I've used it about 10 times. There are some scratches from use. I will include either the 45mm or 55mm rubber band. Please let me know which one you would like after you purchase. Please note that the rubber band may have grease or oil on it. lefreQue for flute, bass clarinet, alto saxophone, tenor saxophone, baritone saxophone, flugelhorn, euphonium, alto horn, trombone, tuba, and bassoon.