They are simple to use and convenient to connect aluminum profiles straight lengthened connection between two profiles,suitable for most of metric 20 Series Aluminum Profile Extrusion. 20 Set Black 2020 Series Aluminum Profile Connector Kit, 20pcs Corner Brackets With 40pcs M5 Screw Bolts And T Slide Nuts For 2020 Series Aluminum Profile Rail, T Slot Extrusion Accessories 12pcs 2020 Extruded AluminumStraight Line Finish:Nickel plated ,More Good Rust Resistance and Better Performance. Package including:12Pcs Straight Line Connector and 48pcs Screws. Aluminum Profile Fastener,Straight Line Connector Material:Made From High Quality Carbon Steel, These Aluminum Extrusion Profile Connector Parts Have High Hardness and A Long Service Life Compatible with 20x20/30x30/40x40 series aluminum extrusion profiles, offering versatility for various construction needs. This straight connector offers easy installation and alignment. Enhances structural integrity in aluminum profile assemblies Buy now from Costa Rica and receive it at the door of your house!