Designed for today"s security requirements, the new Master Lock 1174 ProSeries Resettable Combination Locks combine the strength and weatherability needed to withstand harsh treatment and tough environments. Available in brass, stainless steel and durable die cast models, these locks have new features that improve weatherability, the dial dust cover and the shackle seals keep dust and grit out of the internal mechanisms for trouble-free operation. Stainless steel shackles are also available on some models. These ProSeries locks stand up to physical attacks like no other resettable can. The enhanced octagonal boron-carbide shackles are twice as hard to cut as standard hardened shackles and the dead-locking mechanism holds against pry, shim and rap attacks. The ProSeries Resettable Combination locks combine these security improvements with added user convenience. With 10,000 possible combinations, the large ergonomic dials permit operation with gloves, in low light or complete darkness. These locks are also easily set with no special reset tool required.