And here is what Topeak has to say:
This mountain bike specific floor pump features a super-sized steel barrel to deliver the higher volume required of large off-road tires and a sensitive gauge with an air release button to help dial in the exact pressure.
- Head: TwinHead
- Barrel: Painted Steel
- Pressure Tuning: Air Release Button
- Gauge: Base Mount Analog
- Base: Composite
- Oversize Padded Handle
- PSI: 75
- Hose Length: 860
- Color: Black/Yellow
- High Volume Pump: Yes
- Defined Color: Black
- Valve Compatibility: Presta and Schrader
See Topeak for details on their warranty.