Check the listing for details. Stringa-Level Standard Kit SLK-0404 "Goof Proof Shower" Mark E Industries With C. Color: Reds, Condition: New. Listed at 149.40 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 click: https://stores.ebay.com/SobonCorp 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 4 ingenious "Living Levels" will effectively accommodate the average size shower. Kit Contents: - 4 red Ridged PCs - 4 yellow Flexible PCs - 1 Stringa-Level Contractor CaseSupports the tile and stone on shower walls and levels at same timeMolded TPR plastic and glass filled ABS for lightweight design and easy cleanupFeatures built-in level vials and is slotted in multiple areas for easy and quick attachment