Therafin’s versatile Adjustable Height Channel Bracket is attached to a Therafin wraparound half tray that is made out of 3/8" clear polycarbonate. Polycarbonate is virtually unbreakable. The bracket slides the tray on from the front, and flips the tray up and over the side (flush to the wheel) for easy transfer. Bracket fits many standard armpads with maximum dimensions of up to 2-1/2″ wide by up to 1-1/2″ tall. Wraparound shape half trays are designed to provide a large work surface toward the midline yet allow wheel access when flipped over.