Check the listing for details. Stringa-Level Contractor Kit SLK-1010 "Goof Proof Shower" Mark E Industries. Color: Reds, Condition: New. Listed at 289.67 USD. 100% made ​​in the USA, U.S. SELLER Goof Proof Products - YouTube Video will open in a new window [isdntekvideo] string a level - YouTube Video will open in a new window [isdntekvideo] "GOOF PROOF SHOWER Installation System" SobonCorp is the official distributor of Mark E Industries products, if you need any other products clik: https://www.ebay.com/sch/soboncorp_tools/m.html? Stringa-Level Contractor Kit SLK-1010 "Goof Proof Shower" Mark E Industries GOOF PROOF SHOWER Installation System Watch Video https://www.markeindustries.com/videos/string_a_level.html This revolutionary new tool was designed to simultaneously attach and level a continuous stringer on which to stack heavy or large format tile vertically. No more cutting or trying to straighten warped wood in order to build the all important 1st course. Created to be reused over and over again, StringA-LevelTM saves time and money! StringA-LevelTM will quickly conform to any wall, regardless of shape or contour. Rounded walls, inside or outside corners won't stop StringA-LevelTM. Leveling bubbles are built into each piece to ensure accuracy & precision. 4 rigid sections along with 2 ingenious "Living Levels" will effectively accommodate the average size shower. Kit Contents: - 10 red Ridged PCs 10 - 10 yellow Flexible PCs - 1 Stringa-Level Contractor Case