The Specialized Airtool MTB Floor Pump is designed for low pressure, high volume tyres, the Airtool MTB provides precise pressure to ensure your tyres are set up for whatever the trail throws at you. Largest 3” (76mm) oversized gauge with precise 70psi (4.8Bar) pressure range. Massive 508cc volume aluminium barrel pushes enough air to seat tubeless tyres. New ergonomic Wing handle with pressure relief valve, Auto selecting Switch Hitter II technology. Includes spare rubber seal for head.