Permanently eliminates floor noise under carpeted, hardwood, vinyl, and linoleum floors. Does not damage floor coverings. Depth control fixture drives scored screw to the exact depth. Scored screw is engineered to snap off at the exact point every time. For use with a cordless driver/drill or corded drill. Kit includes alignment and depth control fixture, 50 scored screws, and a No. 2 square recess screwdriver bit. Refer to Model No. 3251 (SKU 240001) for replacement screws.