1. Magnetic damping tensioner, also known as permanent magnet tension controller, is a device that transmits constant torque with a magnetic field as a medium. The damping disc is not in contact with the magnet, no sliding friction, long service life, and extremely stable tension control 2. Rotating parts are precision machined from lightweight, strong materials with minimal moments of inertia 3. The tension output rubber wheel adopts elastic soft rubber, which does not hurt the line 4. The metal parts are rust-proof 5. The tension adjustment is convenient, the structure is compact, the size is compact, and the operation is stable at each position, Manufacturer: HDXAEW