The Tuuk Lightspeed holders are Impact tested under HECC and CSA helmet standards to ensure a stable and high quality product. Improved hardware from the Custom holders lock the steel into place and eliminate slipping and loosening. Tuuk has also optimized the height of the Lightspeed holder for better feel and turns. The Lightspeed holders are a one piece construction using an internal screw in the heel to fasten the runner to the holder.