well a lot of the stuff is junk, but id say with most of the non complex tools they are pretty good.
Gloves, hammers, impact sockets, pry bars, unitbits all good.
Air tools are hit and miss, i have killed a couple air ratchets and other tools, but its really hard to match the price even with 2-3 replaements over life. <and i only oil things never>
Drill bits, any abrasives, any cut off, or blades of any sort are all junk.