17 pc 4-Way Hex Key Set Ball End (Bolton, MA)

We couldn't find our metric hex key set, so we purchased this one, but then ended up finding ours and don't need this one anymore. ($15 value) We took it apart because we were having trouble getting the right angle with it, but saved all the pieces and it can be put back together. OR it might be easier just to attach all the pieces to some kind of split key ring for ease of use.