Abstract: A tool apparatus for applying a large closing force to an object is disclosed. The tool apparatus, capable of improving the efficiency and ease of effort required to crimp nuts onto bolts and to cut materials such as multi-strand cables, bars and the like, comprises first and second jaws, each having first and second portions. Each first portion has a linking end. A mechanism is provided for interconnecting the first and second jaws, and for providing a pivoting point for each of the first and second jaws. A hydraulic cylinder drives a rod linearly along a drive axis from a first position to a second position with a drive force.