【Durable Material】The combination lock features a metal body with a zinc alloy cover for enhanced durability and corrosion resistance. The heavy-duty steel shackle provides additional cut resistance. The weather-protective finish prevents freezing and jamming. 【Long Shackle & Weatherproof Design】The 2.5-inch long shackle padlocks allow for securing in tighter areas. Ideal for securing sheds, gates, chains, garages, closets, tool boxes, bikes, and gym lockers. Weatherproof lock suitable for outdoor environments and extreme weather conditions. 【High Security Lock】The 4-digit combination lock offers 10,000 combinations, making it much more secure than the typical three-digit lock. The shackle of this padlock is strong enough to be damaged by human force. 【Easy to Use】Easy to set and reset your own 4-digit combination for keyless convenience. The unique side window allows easy viewing of combinations. Come with a clear instruction. Once you set the combination, you're safe and sound. No