[1]: APPLY TO - For standard 20x20 aluminum profile extrusion slot., such as building industrial aluminum frame structures, 3D printers, CNC routers, CNC laser cutters, robotics projects, and more
[2]: SPECIFICATION - Overall Dimensions: 10mm(L)x6mm(W)x4mm(H)/0.39"x0.24"x0.16"; Fit for Thread Type: M4 Thread
[3]: DESIGN - They are made of high hardness nickel plated or Zinc plated carbon steel, with good rust resistance and better performance, durable for long-time use.
[4]: ADVANTAGE - Simply put the nut head into the groove in the direction of the profile groove, and rotate it 90 degrees clockwise, it can automatically lock when it is installed.