Sorry thats the first link I found on e-bay, but I expect you can pick one up at most DIY stores cheap.
http://www.ebay.co.uk/itm/2-x-1-4-DR...em33686f6453to
If you have a 1/4" drive socket set try out each of your sockets if any fit your eds drivers (sorry I don't know the size). Then you can use one of these as an adaptor.