Note: The color of the product we ship is the color in the first picture, and the specification and quantity are shipped according to the quantity and specification described in the title. If you need to change the color or style, you need to contact us within 12 hours after placing the order. Our product description: Product Features: 1.Every product has a unique Manufacturing Part Number label on the inner package that proves it has been qualified,which include Part Number,Model Number and inspection date information 2.If you have any questions about the item,please provide us the Manufacturing Part Number for checking,your profits will be guaranteed.3.High quality Carbon Steel.High-strength Carbon Steel die casting Product material for beautiful and high performance.4.Concealed corner brace, the L corner bracket can be completely hidden in the slot of the aluminum extrusions5.Widely used for building industrial aluminum frame structures, 3D printers, CNC routers, robotics projectsSpecifications:Product material:Carbon steelColor:SilverBrand name: BQLZRSize:2.6x2.5x0.95cm or 1.02x0.98x0.37inch(LxWxH)Weight:306gPackage include:30 x Corner Connector Joint Bracket60 x Screws Note: Because the model and display effect of the monitor may be different, there may be slight differences in color, and the size is manually measured, there may be an error of 1-2cm, please understand.