Specification Brand : uxcell BulletPoint1 : [Size] - 3.07" (78mm) long, 3.11" (79mm) wide, 3.07" (78mm) high, 8 Holes - Size1:8.5mm/ 0.33" Dia.& Size2: 30x8.5mm/ 1.18x"0.33" in Length x Width BulletPoint2 : [Material] - Made of aluminum die casting alloy with a sandblasting surface, this aluminum corner bracket is of good rust resistance, high hardness, and long service life. BulletPoint3 : [Used for] - Used for the L or cross right-angle connection of two aluminum profiles or lock connection of heavy frames. Insert the two ends of the L-shaped angle bracket into the groove of the profile, and tighten the fixing screws to fix the two profiles. BulletPoint4 : [Application] - Suitable for 8080 series aluminum profiles with slot 12mm. Widely used for building industrial aluminum frame structures, 3D printers, CNC routers, CNC laser cutters, robotics projects, woodworking machinery, fish tank, etc. BulletPoint5 : [Package] - Package Content: 4 x 8080 Aluminum Brackets. You can install with bolts, nuts or washers (Not Included.). Color : Black ItemName : uxcell 4Pcs Inside Corner Bracket Gusset, 78x78x79mm 8080 Angle Connectors for 8080 Series Aluminum Extrusion Profile Black ItemPackageDimensions_Height : 16.3068 centimeters ItemPackageDimensions_Length : 8.7884 centimeters ItemPackageDimensions_Width : 10.3886 centimeters ItemTypeKeyword : hardware-brackets Manufacturer : uxcell Material : Aluminium ModelNumber : a22092900ux1175 MountingType : Corner Mount PartNumber : a22092900ux1175 ProductDescription : Description: Made of aluminum die casting alloy with a sandblasting surface, this aluminum corner bracket is of good rust resistance, high hardness, and long service life. Used for the L or cross right-angle connection of two aluminum profiles or lock connection of heavy frames. Insert the two ends of the L-shaped angle bracket into the groove of the profile, and tighten the fixing screws to fix the two profiles. Suitable for 8080 series aluminum profiles with slot 12mmmm. Widely used for building industrial aluminum frame structures, 3D printers, CNC routers, CNC laser cutters, robotics projects, woodworking machinery, fish tank, etc.