Lots of confusion out there about how this device works. I was not impressed with the tool when i first got it because it did not feel like it was accurately setting the proper torque. After a lot of experimentation, a conversation with Lisle representatives this week, and checking my tool against a sensitive scale calibrated to measure inch-lbs, I have concluded the following. My tool is set pretty accurately and will break over at 4 inch-lbs reliably IF I use it properly. And that means you must twist the tool handle until it gives a clearly audible CLICK. It is actually pretty loud (and you can feel it in the tool). Though you might have trouble hearing it if you are working in a very noisy shop. When the tools clicks in the fashion, its internal clutch will REALLY slip and you will know you have torque the valve to 4 inch-lbs (trust me on this, I measured it 20 times in a row and it hit the mark every time).This is a very nice and useful tool, nicer than anything else I have found out there to properly torque valve cores. It says USA on the red barrel of the tool, for those who are wondering where it is made. IF you use the tool correctly, you will NOT mistake the CLICK for anything else. It is THAT strong and clear.One knock against Lisle is that they included ZERO instructions on how to properly use this tool in the packaging. If they spelled out what I am telling you here, they would have a lot more happy customers that would not be ripping off the nice black handle or ranting that the tool doesn't work or is junk due to the fact that they don't know how to use it. Perhaps Lisle should allocate more space to explaining how to properly use this tool and less space to translating their crappy current instructions into three languages, huh?
Rating:
[5 of 5 Stars!]