Rock Graphite is the deep charcoal shade of the Rock range: a glazed porcelain tile with a Matt finish and a stone look, sized 60x120 CM and also offered in 60x60 and 80x80 CM. The face shows a fine grey speckle over the dark base, with subtle darker and lighter patches that keep the surface from looking flat. Key specs: water absorption < 0.05% (ISO-10545-3), breaking strength > 1800 N (ISO-10545-4), Class PEI 4 (2100 revolutions) abrasion resistance (EN 154), Mohs hardness 5 (EN 101) and slip resistance > 0.40 dry, > 0.40 wet (ISO-10545-17). Thermal shock resistance is a Pass (ISO-10545-9). The collection also runs in Rock Bianco, Rock Crema, Rock Grey and Rock Nero.