For standard 6mm T-slot: Our excellent joint bracket is applicable for the right angles of the European standard T-slot industrial aluminum profiles, to reinforce the corner joints. In addition, its small shape allows it to be completely hidden in the slot of the aluminum extrusions. Ideal for furniture, construction and outdoor installations.Unique L-shaped design: Compared with other types of corner connectors, our L-shaped design provides you with greater convenience. Working as a right angle connection of the two aluminum profiles, it solves your difficulties of finding a fixing tool. A must-have part or accessory for profile installation. Rustproof and Durable: Crafted from high quality zinc alloy materials, this L-shaped hidden corner maintains extraordinary features of sturdiness and durability. Its surface is nickel plated, which has good rust resistance and better performance. All these advantages provide long-lasting use.Easy to use: Whether you have excellent hands-on ability or not, the L-Shaped Hidden Corner Bracket is designed for ease of use. Its built-in connection retains beautiful and simple functionality. Insert the two ends of the L-shaped bracket into the groove of the profile, and then tighten the set screw to fix the two profiles. No other fancy technique is needed.20 Pcs Value Pack: The installation tool kit comes with 20 T-slot L-shaped interior mounting brackets and 40 screws. Sufficient quantities to meet your daily needs. Get the satisfying quantity at the most decent price. Ideal for installing home furniture kits. An ideal choice for replacing old brackets in the home. Note: The data are all manual measurement, please allow 1-3cm error, due to the light and display difference , there will be some color difference, depending on the physical item received.