General description The 50Pcs M8 T Slot Nuts are designed for 3030 Series Aluminum Extrusion Profiles, featuring an 8mm slot. These spring-loaded ball nuts ensure stability during installation, preventing them from sliding while being screwed in. They are ideal for various applications, including building CNC routers, 3D printers, and robotics projects. Technical specifications Color: Silver Material: Stainless Steel Size: 21 x 13 x 7.8 mm Package Contents: 50 x T-slot Nuts Measurement allowed error: +/- 1-3 cm Usage Perfect for 3030 aluminum profiles and rails. Can be used to replace lost parts in 3D printers. Facilitates the addition of supports to strengthen 3D printer frames.