General description The Master Lock 1178D ProSeries 4 Digit Padlock features a robust die-cast zinc body and an octagonal boron carbide alloy shackle, providing superior protection against forced removal by cutting. This resettable 4-digit lock offers over 10,000 possible combinations, ensuring enhanced security. The deadlocking mechanism protects against prying, shimming, and rap attacks, making it a reliable choice for various applications. Technical specifications Body dimensions: 57 x 50 mm Body thickness: 31 mm Shackle dimensions: 24 x 27 mm Shackle thickness: 10 mm Usage The combination dials are designed for ease of use, featuring Master Lock's unique blind system that allows for smooth operation even when wearing gloves or in low-light conditions. The lock is built to withstand harsh conditions, thanks to its shackle seal and combination dial dust cover, which protect the internal components from dirt and debris.