http://www.ebay.co.uk/itm/24v-Li-Ion-Cordless-Impact-Wrench-Gun-1-2-Drive-2-Twin-Lithium-Batteries-/221818482739?epid=632142251&hash=item33a5697033:g:g-EAAOSwyQtVjW4g thats the one I have, broke once and they replaced the whole thing. 300nm is plenty for most jobs tbh. For a hobby it will do the job, obviously not mechanic standard.