These standard European nuts are made of high quality carbon steel, are extremely hard and have a long life. These sliding blocks are robust and resistant to corrosion in many environments. Brown finish, high hardness, high strength, durable use. T-Track sliding nuts. The surface is covered with zinc for good resistance to rust and better performance. It is used for T-groove aluminum extrusion to connect other parts and connected with a T or other screw. A sufficient quantity can meet your different needs. 100% brand new and high quality. There are two different models. Practical to transport and use, safe and durable for long-term use, easy to use, with simple instructions. Sous-dimensional adapted to the split machine table. It is used for aluminum profiles with T-grooves to connect other parts. The bottom of the nut is spinning to prevent the bolt out. The T-groove nuts allow the user to add clamps to a device without tearing existing clamps. The installation is easy, the