Originally Posted by HapHazard
Went to the maul this AM with a 10mm bolt (wanted to get the tightest fitting socket in stock) and bought this:
Generally speaking, avoid using chrome sockets and extensions with impact tools. They're very hard and can shatter under the loads an impact wrench can impart. Impact sockets and extensions have a higher yield strength than their chrome cousins and can handle the abuse better. You were likely never in any danger of that with this job, you stated the bolts spun right out without drama. 12pt impact sockets are out there, but you've got to seek them out.