Made from Zinc Alloy,high hardness and a long service life for good rust and better performanceThey are simple to use and convenient to connect aluminum profiles straight connection between two profilesSuitable for connecting at the specified angles,Aluminum 8mm -slot framing profiles of 30 metric seriesWhen it is installed,it is inserted into the pit of the butt joint of two profiles,and then tightened with set screwsAluminum Profile 3 Way Corner Joint Brackets Widely Use to build CNC routers,3D printers,CNC cutters,CNC plasma cutters,robotics projects,3D carvers,machine guards,workstations,etcColor:silverMaterial:aluminum alloyPackage Contents:4 x 3030 Slot 3 Way Corner Joint Brackets32 x ScrewsOnly the above package content, other products are not included.Note: Light 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.