The Powernail PowerJack Model PJ100 (06-99330) floor tightening jack, is designed to pull or push tongue-and-groove flooring strips into place and position for hands-free nailing. Perfect for professional flooring installers, the PowerJack 100 will work on almost any thickness flooring without damaging the flooring surface. This wood floor ratcheting positioner can be used next to the wall, at stud locations or anywhere else on the floor. Speed up installation, eliminate the use of pry bars, gain additional leverage in tight spots, and build a better floor with the Powernail PJ100 PowerJack. Works great for under-cabinet installations.