Hydraulic scissors cut through metal. In a rescue, hydraulic scissors are used to cut through the metal structures and bars found in vehicles and buildings that may have been destroyed. Cutters can cut through debris in a confined location and maintain the safety of those inside. They come with replaceable blades made of steel. Cutters have handles that rotate and are removable for confined places. Controls for cutters are different and depend on the manufactured product, but many offer a push button control which changes speed and the types of operation.
Spreaders are made of high-strength aluminum, used in aircraft design to resist wear. They have a collapsible handle with tips that can angle in three different directions and are placed between vehicle doors or fenders, pushing the metal apart. Spreaders come with variable speeds and contain grips on the handles to allow the arms to spread. The hydraulic pressure is used to either separate or spread the arms of the spreader.
Rams are available in many sizes. Each size produces a different force and each use different amounts of hydraulic fluids. Telescoping rams have a head and base that are designed to dig. Mini rams are designed for a confined spaces, such as a dashboard of a vehicle. The hydraulic pressure of the rams are used to push and pull material.
Hydraulic power tools generate power in three ways---through gas, electric and manually. Each has different engine capabilities and the strength and size of units can vary. Some power units operate on hydraulic fluid pressure. Hydraulic power units can be operated by a hand or foot that connect to the power units, most of which are used for light use.