About this merchandise TYPE: Sliding nut, suitable for Aluminum Extrusion Profile 2020 collection T-Slot 6mm. MATERIAL: High quality carbon steel,have excessive hardness, surface is Zinc-plated for nice rust resistance. SLIDER SIZE: Length 10mm, top 4.5mm, width 9mm; step width 6mm, step top 1.5mm. Sliding nut can solely be inserted into T slot from the top profile, it owns the most best connection strength and reliability. Very clean to be slide into T slot of aluminum profile. 2020 Series Aluminum Profile Sliding T-Nuts broadly used for building commercial aluminum frame structures, 3D printers, CNC Routers, CNC laser cutters, Robotics Projects, etc. Product Description 100pcs M3 Slide in T Nut Tee Sliding Nut for 2020 Sereis Aluminum Extrusion Profile Slot 6mm Product Name: Sliding T Solt Nut Used for: Standard 6mm Slot 20 Sereis Aluminum Extrusion Profile Material: Carbon Steel Surface Finish: Zinc-plated Thread Diameter: M3, M4, M5 M6 Metric Suitable for Slot Width: 6mm Slide Block Size: Length 10mm, height 4.5mm, width 9mm; step width 6mm, step height 1.5mm. Feature: Sliding nut can only be inserted into T slot from the end profile, it owns essentially the most ideally suited connection energy and reliability. Package Include: one hundred items Sliding T-nuts