Floor pumps are one of those invisible pieces of cycling gear that most of us tend to take for granted, but that are integral to the sport. The fact that we tend to not think about pumps doesn't diminish their importance, but if you have a pump of the Lezyne CNC Drive ABS 2 Floor Pump's caliber, you'll really want to think and talk about it. The CNC Drive is the top end offering from a top end manufacturer. As the name implies, it features a fully CNC machined aluminum construction: barrel, piston, base, handle, and 3. 5in gauge body. It includes Lezyne's ABS 2 Chuck, which screws into the braided nylon hose to accommodate both Presta and Schrader valves. The Chuck's ABS is a wee button on the unit's side that bleeds pressure from the tube for exact PSI control.