The CNC Digital Drive is the ultimate, professional grade bicycle floor pump which features large digital gauge. Its full CNC machined aluminum construction and hardware are built to last a lifetime, and replacement wear parts are readily available. NEW: Highly accurate, easy-to-read 3.5 (88.9 MM) digital gauge. The CNC Digital Drive comes with an extra long, nylon-reinforced braided hose with aluminum couplers. At the end of the hose is the top-of-the-line ABS1 Pro floor pump chuck.