Application For high volumes of hole punching, the electric power pack and cylinder is the solution. This takes all the effort out of punching and is ideal for continual use. Available in 220 or 110 volt versions with foo......Application For high volumes of hole punching, the electric power pack and cylinder is the solution. This takes all the effort out of punching and is ideal for continual use. Available in 220 or 110 volt versions with foot or hand controls. There is no bending down to operate the pressure release lever.