Small shops, special holding problems, and woodworking hobbyists can all benefit from this portable unit. It has all the holding power of the Air-Vac-Clamps but can be installed in a work bench, work station, a wall, or another piece of equipment. Uses only compressed air to secure the workpiece for fabrication. This unit includes: pump, 4' of hose with foot control, gasket material and instructions. The shipping weight is approximately 6 pounds.