The Magnum Pro PP4KT Pneumatic Power Pump Kit with Winchester Engineering Model 1 Auto Ranging Digital Gauge is a fully versatile pneumatic pump capable of generating both vacuum and pressure up to 4,000 psi without liquid. Two support legs fold out to stabilize the PP-4 and the pump can be operated by either foot or hand. The fine vernier control allows the pressure to be finely adjusted and sealed off to prevent slow leaks.