General description The Master Lock 1178D ProSeries® 4-Digit Padlock is a high-security lock designed with a durable die-cast zinc body and an octagonal boron carbide alloy shackle, providing excellent resistance against cutting and forced removal. It features a resettable 4-digit combination mechanism with over 10,000 possible combinations, offering enhanced security. The lock includes a deadlocking mechanism that protects against prying, shimming, and impact attacks, making it suitable for industrial and high-security applications. Technical specifications Body dimensions: 57mm width x 50mm height Body thickness: 31mm Shackle dimensions: 24mm width x 27mm height Shackle thickness: 10mm Combination: 4 digits, programmable with over 10,000 combinations Compatibility and accessories Compatible with standard hasps and locking points designed for padlocks Includes dust cover for the combination dial to protect internal components Installation Insert the shackle through the hasp or