I bought one of these sets from my local toolman for I think £4 or £5, so can do the centre bolt on UT with a normal 1/2" drive ratchet. Does the job perfectly and the bits don't appear to be made from cheese.
http://www.ebay.co.uk/itm/Hex-Allen-Keys-Set-15pc-1-2-Drive-Wrench-Key-Socket-Bit-Set-Metric-4-12mm-/262293834644?hash=item3d11ee4b94:g:m68AAOSwyTZUWhmC
@krankers started
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I bought one of these sets from my local toolman for I think £4 or £5, so can do the centre bolt on UT with a normal 1/2" drive ratchet. Does the job perfectly and the bits don't appear to be made from cheese.
http://www.ebay.co.uk/itm/Hex-Allen-Keys-Set-15pc-1-2-Drive-Wrench-Key-Socket-Bit-Set-Metric-4-12mm-/262293834644?hash=item3d11ee4b94:g:m68AAOSwyTZUWhmC