Athletic Box-D Speaker Stand Adapter A universal speaker adapter with a fastening for two speakers with distance adjustment. Specifications Made in Poland from high grade steel 40Kg max load capacity (2*20kg) Width adjustment to suit a wide range of speakers Suits standard 35mm speaker stands, and speaker mounts Technical Information Weight: 1.10kg Material: Steel Width: 320mm – 510mm Pipe diameter: 35mm Load capacity: 20kg per side