If you are intrested in the eurogroove system try looking at Siegenia or Roto-frank.
From my experience if you buy from many of these hardware experts they are great at selling you fancy stuff but when you get a technical problem they are totally clueless and rely on the manufacturers technical department that know not much more.
If you want to be educated in the eurogroove hardware system call Paul Barthrop Technical Advisor for VBH http://www.vbhgb.com/ he is at there Kent branch.....or was last time I called....he is a eurogroove guru!..... he found me hardware solutions that all the other fancy hardware experts said where impossible!