Product Contents Silver 1010 Aluminum Extrusion Profile Connector Kit includes 30pcs 2530 Corner Bracket, M6 x 12mm T-Slot Sliding Nuts and Hex Screw Bolt，60pcs washer， 1pc 5mm Wrench for set screw. Usage of the product The 1010 corner brackets is a frequently used part in aluminum framing structures for the building industry, 3D printers, CNC routers, CNC laser cutters, CNC plasma cutters, 3D engraving machines, machine guards, and other projects. Quality materials 1010 corner brackets are all made of high quality aluminum alloy, the surface becomes more corrosion resistant after oxidation treatment, the service life is greatly lengthened, the T-Slot slider nut is made of high quality zinc-plated carbon steel. Black stainless steel hexagonal screws, more rust-resistant, no oil stains. Conclude If you love DIY industrial frame construction, look no further than this product!