The Presta Pro Head is a premium, fully CNC-machined pump head designed to pair perfectly with Lezyne HP (high-pressure) and current HV (high-volume) pumps (*Note: Not compatible with older Classic Dirt Floor Drive HV and Overdrive HV floor pump models with 60 PSI gauge and large hose). An easy-to-use, slip-on pump head designed for Presta-only applications - the ergonomic, slim, aluminum lever is actuated to securely lock the Presta Pro Head onto the valve for reliable high-airflow inflation. The innovative Valve Bleed System (VBS) engages the valve pin allowing for fine-tuning tire pressure- Simply push the VBS button to release air from the tire to achieve the desired pressure. Engineered using corrosion-resistant brass internals and a robust aluminum body with a gloss silver anodized finish.