I use these locks to have 4-5 locks at various locations I use frequently, (Various work buildings, my house, downtown library), and they perform well. I love having only one (two really) keys, that I have multiple copies of at home, in case I lose the key. These are defenitly solid feeling, for such small locks. The shackle is large enough to fit the two ends of most steal cables.Things I would improve - The ability to order 2 sets of 4 with the same key. The edges are a little sharp when you purchase them. The lock needs to be oiled (bike chain oil) after 3-4 months of outdoor use, or it starts to "Lock" open, I have not had to oil one twice, would be nice if they shipped from masterlock "lubed".