Battery Power 
product Power Media Battery Power /product-images/power-media/detroit-25m-extension-lead-reel.jpg /product/detroit-25m-extension-lead-reel/ $17 Power Media 
Power Media · Battery Power
Detroit 25M Extension Lead Reel
You might also need
Battery Power 
10/15amp IP66 to Plug Adaptor
Battery Power 
10A 4 way IP66 RCD Power Board w/ 1.8m braided lead
Battery Power 
10amp / 10m Extension Lead 1.5mm Rubber Flex Cable (Green Tag)
Battery Power 
10amp / 10m Extension Lead Piggyback (Blue Tag)
Battery Power 