Spark R&Ds NEW Fixie Clips come in a sleek, lightweight aluminum design that features no moving parts. Its stiff, simple, and requires no rotation - just put your board together and go. The Fixies have built-in adjustability to help compensate for varying board hole patterns. They shed snow and ice, and wont slip over time. This model of Fixie Clip is for through-mount splitboards that are drilled through at the clip mounting points (you can see screw heads on the base of your board). Spark has Top-Mount Fixie Clips for boards with inserts (you do not see any screw heads on the base of your board).