Designed to provide additional support during long rehearsals, performances and practice sessions, the Gibraltar GUBR Universal Backrest adds adjustable lower-back support to compatible drum thrones. The height-adjustable design allows players to customize positioning for their preferred seating setup, while the secure clamp attachment mounts directly to a 7/8" throne post for dependable stability. Built from durable materials for regular use, the GUBR is designed to fit most 9000 Series and other standard spindle-style drum thrones, making it an easy upgrade for drummers seeking added support behind the kit. Not compatible with hydraulic drum thrones.