1、There is a bearing on each side of the channel to maximize load carrying capacity. 2、The large central cavity provides protection for the motor, battery and internal drive components. 3、With mutually perpendicular surfaces, the channel provides multi‑directional support. 4、The product is made of high‑quality aluminum alloy, which is hard, durable and has a long service life. 5、After anodizing treatment, has better corrosion resistance and better performance. Condition: 100% Brand New Item Type: U‑Shaped Beam Material: Aluminium Alloy Color: As the Picture Shown Application: Compatible for FTC, gobilda, rev robotics, FRC, FIRST, FLL, WRO, tetrix, ServoCity, STEAM, VEX ROBOT, andymark, STEM, Pitsco Education. Size: Approx. 19.2 x 4.8 x 4.8cm/7.6 x 1.9 x 1.9in Weight: Approx. 128g/0.3lb Processing: Anodizing Packing Quantity: 1PcsInstruction: The three sided profile of 3120 Series Channel offers support to axles that run perpendicular to your frame with a bearing on each side of the channel in order to maximize the load-bearing capabilities. The large central cavity provides protection to motors, batteries and drive components housed within. The channel provides multi-directional support given it has surfaces perpendicular to one-another. 1 x U‑Shaped Beam