Geared2U Bike Pump by Mini, Compact & Portable - For Road, Mountain Or BMX Bicycles - Presta & Schrader Valve Compatible - Premium CNC Aluminum - Extremely Lightweight TOUGH AND DURABLE - This bike pump won't break and you will always be able to deal with a flat tire no matter how far from home you are. THE ONLY PUMP YOU NEED. 100 PSI capacity means you can use this frame mounted pump to inflate your bike tire from flat during emergency repair or just use it to keep your tire pressure up during long rides. SIMPLE AND EASY. Instructions to configure the pump head for either Presta or Schrader valve stems are e-mailed out to every customer and you can also find the instructions at www.geared2u.com or the Geared2U YouTube Channel. SUPER COMPACT AND ULTRA LIGHTWEIGHT. Almost weightless (3.3oz) and extremely compact (only 7 inches long when not in use) so you can attach it to your bike frame under your water bottle cage with the included bike frame mounting kit, keep it in your bike bag or just carry it in your pocket.