If you are in search of professional and practical corner bracket connectors for aluminum profile, then you can not miss our products. That's because they can satisfy your needs well. Made from aluminum alloy material, it is , support long term using. Light weight, reasonable structure and high loading capacity, can connect aluminum profile stably. Features -Color:Silver. -Material:Aluminum alloy. -Size:4.00X4.00X3.60cm/1.57X1.57X1.41inch. -Hole diameter:0.80cm/ 0.31inch. -Note:Two holes type, mm screws and 4040 series M8T nuts are recommended. -Application: Compatible with 4040 Series Aluminum Extrusion Profile. - The aluminum profile corner bracket is made from aluminum alloy material, withstand long time to use. - Good workmanship, and has the advantages of corrosion resistance and rust prevention to let you use rest assured. - Wear resistance and resistance, can be used indoor and outdoor aluminum profiles applications. - Reasonable design and angle, can between aluminum profiles in almost any configuration. - Widely used for printers, CNC routers, robotics projects, machine guards, etc. Package list: 10 x Corner Brackets