EUROSTONE BOND is the first polymeric sand, that meets ASTM C144 gradation, specifically designed for natural stone pavers. It can be used in an application for traditional and overlay base systems. It is perfect for stone roads, piazzas, driveways, pathways & stone apron driveways. This complete multipurpose sand is available in one color, slate grey. It sets above the freezing temperature 32°F (0°C) and can be used for joints up to a maximum of 1.5” (3.8 cm) wide.