Some jack at the tire shop twisted the nuts on my wife's car. I didn't find out until I fixed her flat tire. Two rivets just broke off. After removing the caliper and rotor I had access to the studs. The hardest part was finding the exact spot to remove and replace the bolt. I sprayed the broken bolt with penetrating grease and knocked it out with a hammer. Apply a drop of oil to the splines of the new bolt. I just planted it in the hole with a hammer and punch. Mount the Lisle tool to the bolt with a tapered nut. I tightened it with a 1/2" ratchet (I was afraid to use a pneumatic wrench). No problem, I put the bolt right into the wheel hub. Great tool. Easy as pie.