Works great and very easy to use. I pulled it out of the box and put it to use right away.

Works great. Price wasn't bad.

You could pay a lot more for a tool like this, but I doubt you'd get that much more for your money. It's a simple tool, it does the job, and it's inexpensive!

I had to file the wrench a bit since it was too narrow for the SMA nut.

damit kann man SMA-Stecker richtig anziehen - sehr gut

Chiave dinamometrica SMA da 8 mm (0.9 N·m). Ottimo prodotto, prima dell'utilizzo consiglio una buona lubrificazione del prodotto e successivamente una calibrazione e verifica della coppia con torsiometro digitale di precisione. La chiave è tipo SMA per connettori RF con struttura a sfera interna, realizzata in lega di acciaio che gli conferisce alta resistenza per quanto riguarda il materiale e anche per l'usura.

If you only screw your SMA connectors hand tight, you will inevitably get grossly incorrect and inconsistent results! So, it is necessary to used a wrench to tighten SMA connectors. How tight? 6 in-lbs is good for consistent electrical connection, 8 in-lbs for permanent vibration proof connection.IMPORTANT - the wrench comes without lubrication! You must apply oil to the elbow and internal cylindrical sliding surfaces, and a heavy grease to the ball surface - else excess friction will probably break your SMA connector! Once the tool is properly lubricated, it should be re-calibrated using known weight and length scales. With all this done, an SMA connector can easily take 6 to 8 in-lbs. torque - no problem!Do not push on the end of the torque wrench handle! When applying torque, remember that you are literally "applying torque" - not linear force. This means your hand and wrist should impart a twisting action. If there is any linear force applied to the tool, it will result in a combined force (sheer + bending + torsion) when all that is needed is a simple torsional force. Unnecessary combined force could break or damage a SMA connector or PC board.4 out of 5 stars because the tool is quite a bit bigger than expected or needed, which makes it somewhat less convenient to use.--a mechanical engineer