Very informative, thankyou. Does the 6850 have Ni-Cads and the 7850 Li-ion?
May not be as good as the Snap On etc but at that price be a good one to keep in the car!
Just found this, seller bought from a friend who was desperate for some cash
Snap-On Lithium Ion Ct7850 18 Volt Cordless 1/2" Impact Gun In Extreme Green | eBay
Approx 4 months old
Looks like a good buy
Ignore what it looks like, it's the intrinsic quality you should worry about.
Rugged 'sounding' or 'looking' no-name ebay tools will end up in the dustbin usually after a few months of use. Especially heavy use/complex items like power tools. Cheap quality gears, casings, batteries etc make them throwaway items. Probably a couple of drops on the floor or a few weeks use will render it broken.
I'd either buy that snap-on or spend the cash on breakdown assistance instead - no need to worry then