Features 1、Equipped bearing on each side of the channel, which can maximize load carrying capacity. 2、Due to large central cavity, protection can be provided to motors, batteries and internal drive components. 3、Provides multi‑directional support with mutually perpendicular surfaces, made of high‑quality aluminum alloy and processed by anodizing. 4、Low‑side U‑shaped channel provides structural integrity similar to the 3120 series U‑shaped channel while saving real estates costs. 5、Reduced height of the sides allows for a more compact construction, while still providing three sides to construct. This is an excellent choice when building a chassis with a motor running perpendicular to the direction of the channel. Specification Item Type: U-channel Model: 3121-0004-0120 Size: Approx. 12 x 4.8 x 1.2cm / 4.7 x 1.9 x 0.5in Weight: Approx. 40.5 g / 1.4 oz Material: Aluminum alloy Processing: Anodizing Packing Quantity: 1pcs Size: Approx. 4mm / 0.2in Approx. 24mm / 0.9in Approx. 14mm / 0.55in Approx. 120mm / 4.7in Approx. 2.5mm / 0.1in Approx. 43mm / 1.7in Approx. 48mm / 1.9in Approx. 12mm / 0.5in Approx. 8mm / 0.3in Approx. 16mm / 0.6in Approx. 32mm / 1.3in Package List 1 x U‑Channel