Description: Repair a flat and get back to riding in seconds with this bike pump. Just insert CO2 cartridge (not included), connect to tire valve, and twist to inflate. The bike pump can handle any valve type so you don't need to pack additional tools or valve kits. What's more, it fits most sized CO2 cartridges. This mini bike pump fits in your seat, stem, or saddle bag perfectly. It's one of the most portable bike accessories available to fix air issues in your tires. Made of high quality aluminium alloy, durable and strong,with antifreeze protective cover. Portable Hand Pump Schrader & Presta Valve Adapter Cycling MTB Bike Pump. Specification: Material: Aluminum Alloy Size: Air Nozzle: 4x4.2cm/1.57x1.65inch(Without Inflatable Bottle) Package Includes: 1 Piece Mini Bike Pump Note: 1. Due to the light and screen difference, the item's color may be slightly different from the pictures. 2. Please allow 1-3mm differences due to manual measurement.