wrench ? we meant rattle gun , tap the socket onto it but dont hit it too hard as damage is easy as you know wink . grumpys suggetion is a good one , a little hard but it does work well . never had a problem with a rattle gun though . they are on ebay for about $85/95 now for electric ones .
i bought one a while ago and it works well , sometimes im too slack to fire up the air here