ITEM NAME:2X(160Pcs T Nut Assortment Kits M3 M4 M5 for 2020 Aluminum Extrusion ProfilQ9M3) 2X(160Pcs T Nut Assortment Kits M3 M4 M5 for 2020 Aluminum Extrusion ProfilQ9M3) 2X(Suitable for 2020 series aluminum profile,widely used for building industrial aluminum frame structures,CNC cutters,robotics projects,3D printers,CNC Routers. T-nut can be automatically positioned and locked.It is a good helper for installing profile parts such as corner pieces. Made from nickel plated carbon steel,durable and sturdy,have high hardness,you can use it for a long time.Assortment kit contains 3 common size,includes M3 M4 M5,you can choose the suitable one to meet all your needs. Type:hammer head Quantity:160pcs DIY Supplies:Metalworking Package:Box Use:for 2020 Aluminum Extrusion Profile Color:silver material:metal Package Contents: 40* M3 nut 40* M4 nut 80* M5 nut)