This is a trombone grip designed to make holding a trombone easier. It has been stored unused. It is designed to work with various grips, but I cannot answer inquiries about whether it will fit specific manufacturers. Made in the USA Neotech https://neotechstraps.com/products/trombone-ultra-grip According to the manufacturer's website, this product is about $40, so it is sold for around 6000 yen. #Support #ThumbRest