If you work on BMWs, you know how finicky their wheel alignment can be. This simple but essential tool makes it easy. It's a threaded rod with an M14 x 1.25 thread – that's the exact size of BMW's wheel studs. You screw this into the hub before mounting the wheel, which helps guide the heavy alloy wheel onto the studs perfectly straight and centered. Prevents cross-threading, damaged studs, and makes the job safer and smoother when you're working alone. Brand new from AutoImparts, in a simple silver finish. A cheap tool that saves you from a massive headache (and potential repair bill). A must-have for any BMW owner, enthusiast, or mechanic who deals with these cars regularly.