This old Sioux Impact Wrench I found is awesome and works great! : r/DumpsterDiving
Vintage Pneumatic 1/2" drive impact wrench air tool vtg unknown maker NOT TESTED | eBay
Vintage Blue Point 3/8s Air Impact Wrench - Working - Missed Parts & Damaged • Made In Japan, Pneumatic Tool's, Workshop Air Tools, Vintage Impact Wre for Sale in Burbank, CA - OfferUp
SIOUX No. 330 1/2" Drive Corded Electric Impact Wrench - vintage usa 115v 4.5A | eBay