The ultimate high-pressure shock pump in a floor pump design. Professional grade, ideal for shop use. CNC machined aluminum and steel construction with varnished wood handle. Ultra narrow barrel provides easy tuning up to 300psi. High grade, nylon-reinforced braided hose with aluminum couplers. Ultra precise, hardened steel APS chuck features rapid-release or fine-release tuning with an innovative zero-loss disengagement mechanism. Extremely accurate Digital gauge. Presta valve compatible.