removing rad tails

[fenzi]

Hi I need to remove a rad tail to change the valve, what size allen key do I need? I've narrowed it down to these:

http://www.toolstation.com/shop/Han.../Rad+Valve+Spanner+127mm+hex/d10/sd210/p90498

http://www.toolstation.com/shop/Han...ner+Air+Release+Key+12mm+Hex/d10/sd210/p63865

http://www.toolstation.com/shop/Hand+Tools/Plumbers+Tools/Radiator+Hex+Key/d10/sd210/p26053

Will they all fit, I notice there's a 0.7mm difference in size between two of them. The rad is over 10 years old if that makes a difference!

Thanks

 

[oilhead]

Buy the purpose built one with slots in to locate in the internals of the tail.

 

[jasongates]

Heres a link from a previous topic. In my experience this is probably the best tool for doing what you need.

http://www.screwfix.com/prods/81700...w&cm_mmc=AffiliateWindow-_-DeepLink-_-Na-_-Na