This pump has great features for a great price. Bracket included for mounting the pump is designed to sit underneath a normal bottle bracket mount so you don't have to choose between inflation or rehydration!
 

Features:

• Fits Car type (Schrader), High pressure (Presta) & Woods valves
• Dual action for faster inflation
• Pressure Gauge enables you to inflate your tyres to the correct pressure
• Pressure display features PSI
• Durable alloy barrel
• Measures 36cm when extended, 23.5cm when not
• Lightweight and easy to carry
• Includes bottle cage mounting bracket & bolts
• Alloy lever for valve release
• Weight: 182g.