Using the Petzl MICRO TRAXION is easy. First, make sure your rope is between 8 to 11 mm in diameter. You can use it as a progress capture pulley in normal situations. If you need it as a simple pulley, just lock the cam in the open position. When using, always check the working load limits. The maximum working load for the pulley is 5 kN and for the rope clamp is 2.5 kN. Don't exceed these limits to ensure safety. After use, clean it regularly, especially if it has been exposed to dirt or frozen conditions. The self - cleaning slot of the toothed cam helps a lot, but a gentle wipe can keep it in good shape. Store it in a dry place. The product comes with a 3 - year guarantee, so if you have any issues, contact the support team.