“These things are a treat to use. I’ll never solder or crimp again if I can help it. I’m going to add a few of each size to my on-the-road tool kit and stock some in my garage. Feel free to quote me.” ...

There are lockers and knockers, limited slips and Sure Grips. Sometimes they're called Positractions and sometimes much worse. But this name game is really about the concept of pushing equal measures ...

They're both supposed to spin. That's all there is to it. When you stab the long pedal on a performance car and the smoke clears, there should be two black stripes of equal length on the ground. When ...