I don't think these Harbor Freight wrenchs last that long. I have a Powerbuilt ½ drive Digital Torque Adapter that I use to test the accuracy of my torque wrenches from time to time.
Here is a video of it.
Powerbuilt Digital Torque Adapter - YouTube

I put my buddy's 1/2 drive Harbor Freight torque wrench that's only been used a few dozen times on the Digital Torque Adapter.

I found at the setting of 50 ft-lbs, the torque adapter noted 53.4 for an error of 6.8% . At the setting of 80 ft-lbs the torque adapter noted 71.3 ft-lbs for an error of -10.88%. Needless to say, that wrench went to the garbage. For twenty bucks or so, you get what you pay in that case.



I prefer CDI manufactured wrenches, which includes Snap-On. Well worth spending the money on a quality tool.

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1983 123.133 California
- GreaseCar Veg System