ANTI RUST WATERPROOF DESIGN - The body, shackle and cylinder are made using complex grade stainless steel, providing protection against harsh weather conditions all year round. ANTI THEFT LOCK CYLINDER - The patented, high precision design makes the lock cylinder almost impossible to pick, drill and prize. DOMESTIC & COMMERCIAL APPLICATIONS - Suitable to use as a gate or shed lock, applications where the highest level of security is required. HOW TO USE - Ensure the rings inside the cylinder are aligned. If the rings are not aligned, use the key tip to push through the rings, until they are symmetrical. Fully insert the key through the cylinder, then rotate 180 degrees clockwise to release the shackle. Place the lock on the application of your choice, close the shackle and rotate the key 180 degrees anti-clockwise to lock. Remove the key from the cylinder., Weight: 0.58 pounds, Manufacturer: Magmaus