I've recently checked out this product (RING-GO-STAR WEBSITE), but I'm wondering two things. One is what exactly does this product do, is it suppose to take the place of a compression device/cap for steerer (why)? And the other is why does the collar/ring expand when I screw the allen bolt in. Am I suppose to screw the allen bolt in to expand the collar, then fit the collar on the steerer and then unscrew the allen bolt to tighten the collar around the steerer. Seems kind of odd, but I'm probably just confused.