The 2020 series aluminum profile connection set is widely used for building industrial aluminum frame structures, 3D printers, CNC routers, CNC laser cutters, robot projects. Cast aluminum corner angle is used to connect pieces of 20mm aluminum profile at a 90-degree angle, suitable for most metric 20 series aluminum profile extrusions. T-slot aluminum extrusion hardware Slide In T-nuts made of high-quality carbon steel galvanized, the surface is plated with nickel for good rust resistance and better performance, high hardness and long service life. High-quality carbon steel button head hex screws Surface chrome finish Anti-corrosion, rust-proof, non-polluting and high hardness. Widely used in household and office appliances, communication equipment, ship assembly and other machinery industries. Color: silverMaterial: carbon steelSize: Nut size: M5 x 10mmScrew size: M5x10mmPackage contents:60 pcs x 20mm 90 degree solid cast aluminum corner angle120 pcs x carbon steel galvanized M5 x 10mm T-slot nut120 pcs x carbon steel M5x10mm hex socket screwOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.