Feature 1The outer contour is square, the corner diameter is 32mm, which can be used with 32mm bearings 2Chamfered edge of the slot provides a path for the Vshaped wheel and the Wshaped wheel, can be used as a linear motion guide 3Use this hole by sliding bearings with flanges on both ends to support the shaft, or by inserting a 12mm square screw nut in the hole to generate linear motion 4The extrusion profile is a great framing materials for professional 3D printers and robots 5Goodquality aluminum material, light weight with good strength and good corrosion resistanceSpecificationItem Type: T-Slot Aluminum Extrusion ProfileMaterial: AluminumModel: 3109-0024-0168Length: Approx. 168mm / 6.6inWidth: Approx. 24mm / 0.9inSize: Approx. 8mm / 0.3in16mm / 0.6in12mm / 0.5in24mm / 0.9in4mm / 0.2inM4 x 0.7mmDepth: Approx. 12mm / 0.5inDiameter: Approx. 14mm / 0.6in32mm / 1.3in .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x T-Slot Aluminum Extrusion Profile