I have to say this is the snap on of bike tools. It works perfect and makes your rim perfect as long as you follow the instructions. The tool is only as good as the operator. All you have to do is just make sure you have the same amount of turns on every spoke and then let the tool do the rest. I would without question recommend this tool. its nice to know that your rims are perfect, and it took less then half of the time then it normally would. By far a precision tool!!!!!