DescriptionThis is a set of spring T-nuts, assembly time through aluminum profile external directly into the groove, the clockwise rotation that can be automatically locking and positioning, convenient installation. Made of premium and durable material, not easy to rust and deform. With large quantities for your needs, with widely uses.Features-Color: Silver.-Material: Carbon steel. -Size: About 2.20X1.33X0.73cm/ 0.86X0.52X0.29inch. -Well plated, wear-resistant and waterproof, anti-corrosion, suitable for various environments. -Just placed directly into the profile groove, can be automatically positioned and locked. -Can fix and stay where you want them, and no sliding around while your trying to screw into them. -Simple to use and convenient to connect aluminum extrusion profiles to other parts. -Manufactured with premium material, it is practical and durable for long time use.