Porta Jack Pro Floor Tightened & Straightened, Jack Tightens & Hold Flooring Strips In Place For Nailing, Straightens Crooked Or Bowed Flooring Strips & Holds In Place For Nailing, Non-Marring Teflon Base Pad To Protect Flooring Surface, Rated For 1.5 Tons Of Force, Removable Shoe For Placement Anywhere In Field Of Flooring.