Model: End connection platePacking: 1PCSMaterial: 6063-T5 aluminumMaterial: 6063-T5 aluminumSurface treatment of end connecting plate: oxidized silver, oxidized blackSpecial screw material: electroplated black - carbon metal Q235Special screw material: white - chrome steel 304Note: It is appropriate for European regular 2040 and double-slot 4040 profile cutting surface. The profiles have to be tapped with M6 thread holes, and the wrench used for screws is 3mm hex wrench