Genuine Innovations Ultimate Air Pump C02 Works with Presta & Schrader Valves. Inflates to standard MTB tire pressure Controllable - Twist to inflate C02 inflation. Includes rubber C02 cover 16 gram included. Durable all alloy CNC construction Hidden storage compartment in handle contains tube patches and Schrader adapter 2 Pumps in 1: C02 for rapid inflatrion and a hand pump for precise pressure