Engineered Wood Stapling Tool is an adjustable stapling tool that works close up to walls, generally as close as one board with. Reduces top nailing and putty work. Engineered Wood Stapling Tool adjusts to board thicknesses from 3/8" to 3/4" in two easy steps. Place the tool's back foot on the subfloor and the stapling nose on top of the tongue. Drop the adjustable front plate onto the top surface of the plank and tighten it. You're ready to staple!