This is a Magnetic Adapter Cable that will allow a Ctek charger with Cteks standard comfort connector fitted  to be used rather than the very expensive Aston, Bentley, Ferrari or Rolls Royce original item. 
It fits all Ctek chargers with the orange marked "Comfort Connector" that fits directly to this cable.
If you are a trade customer we do offer a "Trade 6 Pack" as a cost effective way of assisting multiple purchasing.