The sockets are placed further apart than a normal socket meaning that transformer style plugs (as found on Christmas lights etc) can fit next to each other, instead of having wasted spaces that you can't use.
If you're used to putting your lights up at Christmas you're probably already aware of the problem - this is the answer!
Maximum Power: 3,000w
Fitted with 13 amp plug and 40cm of lead wire from the plug to the socket block
Can also be used as a normal 4 way adaptor
Recommended for the Premier 4 Way Socket Adaptor for Transformers - Wide Spaced for Large Plugs