M1 Bolt Converter (Stud Conversion) is among the safest and beneficial upgrades you can make on a European car. Not only are bolt converters safer than wheel bolts but they make changing wheels/tires much easier. One of the frustrating things about installing your wheels on the hub is that it's difficult to line up the wheel on the bolt holes. As wheels get larger but also heavier it's even more trouble. Add in a wheel spacer and the task is twice as hard. BMW does produce a wheel alignment pin for this purpose but if you're changing wheels often a bolt converter is the better way to go. With M1 Bolt Converter, you won't have to worry about dropping your expensive wheels onto the brake rotor.
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1 pack contains 5 pcs Bolt Converters (for 1 wheel), easily to use only front or rear wheels, or even all wheels.
M1 Threadlocker Removable 243 is a medium strength threadlocker that can be removed after used. M1 Threadlocker Removable 243 has been designed for locking and sealing fasteners' threaded from 6 - 20 mm. After it fully cured, it will absorb the vibration that make nut & bolt loosen. It works well with stud conversion, and even lug bolt. M1 Threadlocker Removable 243 also useful for other parts of the automobile and motorbike. Using threadlocker also prevent thread surface from corrosion.
More Details... http://www.m1autowerk.com/products.php?id=5
M1 THREADLOCKER 243 is available in 10ml. per bottle.
Useful with stud conversion, lug bolt, and other automotive parts. Strongly recommended !