Master Lock ProSeriesResettable Combination Padlocks ProSeries resettable combination locks are designed for commercial/industrial applications. Set-your-own 4-digit combination for convenience and security, 10,000 possible combinations. No reset tool required. Large ergonomic dials with exclusive blind dial feature permit operation with gloves, in low light, or complete darkness. Deadlocking mechanism protects against prying, shimming, and rap attacks Pack of 1