The CNC Floor Drive is a professional-grade floor pump featuring full CNC-machined aluminium construction and hardware. Designed and built to offer a lifetime of service, the pump features fully rebuildable internals and an extremely accurate 3.5-inch precision gauge tested and calibrated in-house for superior accuracy.An extra-long nylon-reinforced hose with aluminium couplers is terminated with Lezyne's signature ABS-1 Pro chuck.