COTOUXKERAdjustable Torque Wrench, 5 to 30 Nm 30mm Open End Torque Wrench with Click and Changeable Head for Hvac Mini Split and Refrigeration System

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This torque wrench is extremely inaccurate. If I would've stayed with what it was reading, I would've damaged my mini split system, plain and simple. Do not buy it do yourself a favor go down to one of the big box hardware stores get yourself, crows feet and a torque wrench. You'll be much much better off because the stuff that Amazon is selling is absolute junk.

Although it’s not on the scale you can count the extra twists needed for higher values, it will do the job.In my humble opinion it’s pretty accurate given that I’ve done plenty of split units without one; it clicks where I’d have stopped.

I used this while installing a DIY mini split heat pump and I'm glad this wrench was available as the instructions really emphasize not under torquing or over torquing the connections. In retrospect I should have gotten the one that ranges from 5-45 ft lb as one of the fittings needed 40 and this one only goes up to 30 but at that point I had figured out what I needed to do to get the fittings tight but not too tight. The wrench was a confidence builder and I was able to get it next day. Thanks Amazon!As for accuracy I tried a regular torque wrench I have and this one set to 20 ft lb and they both seemed to click at about the same amount of force.

Straight forward to assemble. A tad fussy as to actually dialing in the exact torque setting, but OK.Definitely not a tool for someone requiring accurate or repetitive torque uses on a regular basis, but fine for limited applications. Adjustability was welcome to avoid expensive fixed sized add-ons!

Fits the bill for what I need to get the job done well made.

It works well, it's accurate and just what I needed. However... that little ball that locks the jaws onto the shaft has a spring strong enough to lift up a CAT D5 bulldozer. Use needle nose pliers to get it started and a pin punch to get it off. I'm thinking of just abandoning the case and making one to fit the wrench with the jaws attached.But it works. Well. I'm glad that I bought it.

The scale only goes to 25 Nm, so you are left to assume you are torque-set at 30 Nm if you crank it all the way to the max. However, those last several turns are more than you input for 5 Nm increments on the scale - actually twice the rotations. Therefore, is the Max 30 Nm or is it 35 Nm? You don't know, but for the money you pay you should know or what's the point of using a torque wrench? This is nonsense and not worth purchasing. Product is Made in China. As the Jack Nicholson character in the movie to explain all the unwelcome issues in his plot, when it comes to reliable instruments made in china, "it's Chinatown". Disappointed!