I was so disappointed by this lock. I've been a Master lock loyalist for 40 years, since I was in grade school. The last locks I had was a three set of mini's and two out of the three worked but the last one was not opening without multiple attempts and a struggle so I bought the 1590D. It worked the first day I brought it to the gym and after multiple attempts, it worked the second day. After that, I tried time and time again and it would not open. On the plus side, it is extremely strong and tough to cut off the locker--it took two cuts to get it off my gym locker. I just switched to Wordlock and am having much better success.
It's okay. Not what I was expecting from master lock😤