The Spin Doctor Tile leveling system features a patented free-spin design that allows the cap to spin down the spacer screw with minimal effort. This allows installers to tighten the cap with only one hand, which is especially useful for installing large format tile. When installation is finished simply kick off the caps to remove. The caps are reusable for multiple jobs. Additional spacers can be used with system if larger grout joints are required. The Spin Doctor Tile Leveling System is the latest in tile lippage control technology. Speed up your job and prevent costly call backs with this easy to use and cost effective tile leveling system. Become proactive and bring the Spin Doctor to your next job site!