Stillwell hydraulic trailer jacks are designed as a quality alternative to traditional jacks. The 7K Tradesman jack provides greater lift force and faster extension than electric and manual jacks. This 7K jack is used in bumper hitch trailer applications. Designed for rugged environments and easy installation, the Tradesman's inlet and outlet port have welded feeder tubes that connect to a centrally mounted mono-block. The tradesman also feature's a welded body with a pre-drilled mounting plate (flange).