You're a strong woman with 165cm wrist diameters of 4 cm? Then this tool is absolutely suitable, because you will not get it broken. But caution. Are you a 180cm strong man, then he makes such a 15. Open-end wrench when removing the pedals of a bicycle ever the opponent This tool is of good use when it comes to smaller nuts. But if you take what's right Festgerostetes caught, then you have a problem.