Kit delta level system clip 1 mm (3-12 mm) . the delta level system kit from rubi is composed of: 1 delta ls pliers, usable in both flooring and walls (fixing of horizontal and vertical tiles), bag of 100 units of delta ls strips for use in tiles with thickness between 3-12 mm and bag of 100 units of delta ls reusable wedges. presentation in a practical bucket with handle for easy transport and use