The Blackburn Airstik Anyvalve Mini-Pump can be summed up by saying dual strokes = more air. Compact and powerful, this dual-action pump helps you quickly pump up tires without breaking a sweat. The magic is in the dual-action design, which pumps air into your tire on both push and pull strokes. Built with welded, sturdy aircraft-grade 6061 aluminum tubing for rigidity and durability. Includes an easy to install mount that fits under your water bottle cage. A great choice for road riders of all types.