Negative Positive
Title: Not dependable
Review: Working in Afghanistan I purchased 12 of these locks to secure our 20 & 40 foot containers. At first they seemed fine but I quickly learned 3 major problems that have convinced my to not buy these again. 1) Half of the locks in a very short period of time developed a problem with the tumblers. When you turn 1 all 4 turn. You have to set the first number and hold it with your finger and then set the second and hold it too until you have set all 4. 2) Being in the weather (dust and rain) these locks got very difficult to operate. Some would not close, others became difficult to pull open while others had tumblers that became very difficult to read and turn. 3) I have learned of an easy way to open this lock.This particular master lock I would not purchase again. I am still a fan of Master and this is the only lock that I have used over the years that any problems. If you need this type of lock look somewhere else.
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