High Security: Heavy-duty padlocks are stronger than lightweight padlocks. The 4-pin lock cylinder and double-locking mechanism prevent jamming and reduce the risk of opening by hammering or forced entry. Sturdy and Durable: Made with a sturdy zinc alloy body and a 7mm diameter hardened steel locking ring, the yellow combination lock is rust-resistant, corrosion-resistant, and weather-resistant, making it perfect for outdoor use. 4-Digit Combination: The combination lock adopts one-piece manufacturing technology, 4-digit combination, with 10,000 unique options to set your own combination. The window below allows you to easily set your own lock. Widely Used: The combination lock with extra-long shackle is suitable for indoor and outdoor use, such as school lockers, gym lockers, fences, toolboxes, gates, sheds, etc. Length, width and height: 56*25*105mm.