For private use enough ...

The torque wrench is normally only 2x a year needed when changing from winter to summer tires and vice versa. However, whether it can cope with a hard, daily work, I doubt it this is too shaky. There are, however, always professional tool that plays in a different price range (eg Hazet).

The key is actually designed stable enough for home use. However, the enclosed accessories quickly shows weaknesses. The adapter of 1/2 "to 3/8" only lasted one day. The smaller 3/8 "-Fortsatz the adapter has been turned almost literally is tightened by screws. The leaves much on the quality of the supplied accessories include (as a proof I have a picture of the defective part uploaded).

These were probably made only with the lathe / milling machine and not forged, as it should be. Those who are familiar with metal who knows the merits of forged tool against pure machined tool (grain / force curve / stability).

But those who made it is increasingly to use the accessories, will probably disabused. In the total price but you could assume that not everything is 100% ...