When the key to your padlock goes missing, the only way you're getting it unlocked is to cut it off with bolt-cutters. Most of us just don't have these laying around. Before you forget where you put your keys, and before you lock up any new storage areas, look at this keyless lock by Master Lock. The 175 performs the same security as today's padlocks with keys, but you'll never need to worry about having keys with you to open it. You can create your own private combination for unlocking it. This will save you hours each year not having to track down your keys, wait for a locksmith, or make the trip to rent bolt-cutters.