You get what you pay for. Had to repair ruined rotor screw threads in hubs on an '89 Acura. Worked great, precision, perfect results. There are cheaper tools but for something that works and lasts, this is what you want.
Worked very well. Good strong threads now to hold anything that needs to be secured. I have used HeliCoil since the late 1970's, I won't use any other product of this type, because, I don't like performing the same job twice.