But why? You can remove it easily and safely with the screwdriver you already carry. Besides, the BMW one just plain sucks IMHO.
After spending about $50 on a BMW tool and then proceeding to dick one of my coil sticks up with it, now ONLY
the screwdriver method will work on that one.
It's a good idea to make sure the aluminum puller is firmly seated on the coil stick to prevent disintegrating the coil stick. Even though mine was, it still came apart so it's a good idea to know how to use the screwdriver method as a primary or alternative way to remove them.