🔧 Elevate Your Build Game with KOOTANS T-Nuts! Crafted from high-quality carbon steel for long-lasting performance. Spring ball design keeps nuts securely in place during use. Clean threads ensure a snug fit and easy assembly. Perfect for 3D printers, CNC machines, and industrial structures. Designed for seamless integration into 20x20mm aluminum profiles. M3 Thread High Carbon Steel 50pcs Included The KOOTANS 50pcs 2020 Series M3 Half Round Roll in Spring T Slot Nut is engineered for precision and durability, making it an essential component for any project involving 20x20mm aluminum extrusion profiles. With high-quality carbon steel construction and a user-friendly design, these nuts are perfect for a variety of applications, from robotics to CNC machining.