I've spent the last forty years knuckle busting on equipment large and small. I have every size impact from 1/4" to 3/4" and several just in 1/2". My strongest is a big double hammer IGR 1/2" the 3/4" isn't as strong unless you use 1" hose and 150 psi . I also have a HF with 2" extended 1/2" actually my favorite . A little air oil every day and it's been working thirty years . Now I've gone to IGR battery jobs 14.4 volt and 19.2 volt with the lithium batteries . They were extremely expensive but worth it not to hall around hoses and be restricted. Still need the air ones , but my HF gets grabbed unless I need tons of punch the IGR also weighs as much as the 3/4" craftsman . Only bought that one when our Sears Kmart went under . My shop I run the compressor at 125 psi and 100 psi to my limes with filter and oiler . Compressor has auto drain too. I figure my tools cost to DERN much to not protect them. Oh the big IGR sounds like a machine gun if you feather the trigger. Hitler's buzz saw mg .
I have an ancient CP 720 and it rocks. But having said that my Milwaukee M18 2763-20 walks all over it. And no hose to drag around with you.
Not cheap at $200 plus a battery, but I haven't run across anything it won't break loose. The neighbors son uses his on his semi. Takes it with him, uses it to change tires on his log truck and trailer.
I'm looking for a good quality air impact wrench. Got a big Rol-Air two stage air compressor I use for sandblasting so I've got plenty of air. I'm not a professional wrench turner but want a good quality air impact wrench for general automotive work that will last. Not interested in cheap imports.
I'm not opposed to buying a quality used one but not sure what to look for. Does anyone have a specific recommendation on a brand & model? Good used ones to look for or buy new?