Feature 1Outer 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, which can be used as a linear motion guide 3Use this hole by sliding bearings with flanges on both ends to support the shaft, or just by inserting a 12mm square screw nut in the hole to generate linear motion 4The extrusion profile is great framing materials for professional 3D printers and robots 5Adopt goodquality aluminum material, light weight with good strength and good corrosion resistanceSpecificationItem Type: T-Slot Aluminum Extrusion ProfileMaterial: AluminumModel: 3109-0024-0192Length: Approx. 192mm / 7.6inWidth: 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 ExtrusionProfile