They connect well, a little slippery when trying to press the clips down, but they are all like that.  I ordered another bag.  I use these for making colloidal silver, and for grounding mads and any other mad science projects. I take them off and on all the time and they still work well. None have failed so far.  Much better conductivity than those ones they offer 30 for the same price.  If this was helpful could you please click the helpful button so I know these reviews are worth writing.  Thank you.