I installed them on a 2000 Ford Excursion to replace the factory locks. I think the whole process took about 20 minutes from start to finish. These bushings rotate easily and give a nice "click" when fully rotated. It only takes a quarter turn to lock/unlock these hubs. These hubs are much shorter than the factory hubs and I ended up removing the factory center caps because the big hole in the center cap didn't look right. An excellent manual locking hub all round!