KS Tools was recommended- me so I was looking directly to this manufacturer. There are several torque wrench of this manufacturer, for red and blue colors. At first I wanted to buy the red, but I looked at sichreheitshalber ks, and found that in this only 10 !! are set nm steps. that is of course murks but in cheaper segment (see Fig. proxxon ...) probably usus. Now This seller had both torque wrench in offer- blue with nm accurate adjustability few euros more expensive .. The tool comes with calibration certificate can be adjusted well and safe and lock. you just have the first crack his lassen- otherwise overexcited one. keys at dm below 200 euros is a loosening of the screws with the dm-key NOT vorgesehen- and harmful. Plugging it "inside out" is used here for example. Tighten to left-hand thread.