Docooler&reg; Mini Portable Bike Pump Air Pump Double Action Hand Pump Bike Tire Ball Inflator Presta & Schrader Compatible Made of CNC machined high strength aluminum alloy, solid and durable. Compatible with Presta and Schrader, easy to operate without adapter. Max capacity can reach 210 psi, powerful enough to inflate your bike tire. Dual action, inflating bike tire when you both push and pull. With a ball needle to inflate soccer balls, basketballs and more. With a mounting bracket, easy mounting to bicycle.