-1. The all-copper combination padlock is integrally formed, the pure copper is thickened and thickened, no keyhole is anti-theft and tamper-proof, and the thickened stainless steel lock beam is anti-cut and anti-saw, safe and reliable. -2. Flexible password wheel, multiple sets of passwords can be set arbitrarily, with high security and strong anti-theft. The cipher wheel is precisely processed, does not lock, rotates smoothly, and is durable. Please remember the modified password. -3. Due to the one-piece brass design and 304 stainless steel spring marbles, it is not easy to rust, is waterproof and dustproof, and is more suitable for outdoor use. -4. The surface drawing process is uniform and beautiful, and the edge water chestnut is polished, wear-resistant and durable. -5. Different sizes can be used in different scenarios to avoid the trouble of forgetting to bring the key. Such as: trolley cases, backpacks, briefcases, filing cabinets, gymnasiums, tool boxes, house doors, garden iron doors, truck compartments, bicycle chains, etc.