[High-quality material]: All aluminum alloy CNC removable handle, anodized surface, bright, lightweight. Exquisite CNC twist design, aluminum alloy joint, excellent thread. [Exquisite workmanship]: CNC knurled design, high strength, non-slip, flat thrust, wide range of use and strong versatility. Stainless steel screw, fine pitch and high strength. Suitable for most lengths of steering pipe, aluminum alloy upper/lower pressure blocks. [Easy to use]: When installing the center movement, adjust the position of the pressure device, flat holding pad, labor-saving design, the bearing uses a lubricating ball, not easy to bend, hold with both hands and slowly apply pressure to install. [High-quality repair parts]: Pressure lock design, the back is used to assemble the pressure center movement, and the diffusion table is designed to reduce the pressure on the bearing during installation. Please pay attention to using the adjustable wrench to gradually tilt the headphones