• Multi-application: suitable for 40 series aluminum profiles. Used in industrial production, automated lines, architecture, carpentry, aluminum frame structures, CNC laser cutters, robotic projects, 3D printers. • Specifications: 15 square T-nuts of 19 mm x 19 mm x 9 mm. M8 x 16 hex screws. EU standard of 40 M8. • Precise craftsmanship: precise cutting for holes and shape according to aluminum profile rails. Compatibility with EU M8-40 T-nut rail. • Easy to use: insert into the slot before profile assembly, then secure the nut. • High-quality material: strong, stainless, and anti-corrosion steel. Polished surface for easy movement.