Performance Accessories 601270 Heavy Duty Unitool Installation Kit for Laminate and Engineered Floors is perfect for do-it-yourselfers and professionals. This kit is developed for floating floors with click together installations. 12-3/16” x 2-7/8” tapered pull bar is made of solid galvanized steel, with a chiseled end to fit into tight spaces. 6-7/8” x 2-5/8” x 3/4” solid tapping block with notch to prevent flooring damage during installation. 8 mm double-sided spacers are adjustable to allow for wider or narrower expansion gaps. Use individually or in combination to maintain 1/4" to 3/8” expansion space during installation. Using spacers throughout installation will keep the floor straight even if the wall is not.