Item Type: Extrusion Profile Linear Material: Aluminum Size: Approx. 24 x 24 x 48mm / 0.9 x 0.9 x 1.9in Quantity: 1Pc Complete removal of anodizing. Package List 1 x TSlot Linear Rail Beam 1This outer contour is square, the corner diameter is 32mm, and it can be used with 32mm bearings. 2The hole of goRUN has a unique combined shape derived from a circle with a diameter of 14 mm and a square with a diameter of 12 mm. 3Use this hole by sliding bearings with flanges on both ends of goRUN to support the shaft, or by inserting a 12mm square screw nut in the hole to generate linear motion. 4The chamfered edge of the slot provides a route for the Vshaped wheel and the Wshaped wheel, allowing goRUN to be used as a linear motion guide. 5This T-shaped linear rail is made of aluminum, which is durable, rust and oxidation resistant.