I am selling this item because I don't use it. It is a new, unused product. This is a holder that inserts into the hole of an orchestra wood block and secures it to a stand. Mounting it allows for playing techniques using sticks or mallets with both hands. ■ Wood Block Holder ■ For WB-1M/WB-1L ■ Wood block mounting section: Approximately 28mm to 52mm (from the center of the mounting pole to the center)