Selecting the right steel is crucial for optimal skating performance. The Bauer Fly-X Runners are meticulously engineered to enhance every aspect of your skating, from maintaining sharp edges to ensuring secure blade attachment and overall durability.Premium Materials: Designed for durability and peak performance, ensuring longevity and consistent excellence on the ice.Iconic Brushed Finish: Provides a traditional steel finish for smooth edges, facilitating seamless glides and precise movements.Hyperbolic Geometry: Enhances blade connectivity, resulting in increased performance and stability.The Fly-X Runners are compatible with the following holders:Powerfly HolderTUUK Lightspeed Edge