Therafin’s Quantum TB3 Steel Channel Bracket is attached to a Therafin 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 out to the side for easy transfer. Bracket fits the TB3 armpad with maximum dimensions of 2-11/16″ wide by 1-1/2″ tall. Standard shape half trays have an angled outer edge, with a larger work surface.
