Available Sizes;2 cm. Slabs 1.2x30.5x30.5 cm. 3 cm. Slabs . 1.2x30.5x61 cm.30x60x2 cm. 1.2x45.7x45.7 cm. 60x60x2 cm. 1.2x40.6x61 cm. 80x80x2 cm. 1.2x61x61 cm. .100x100x2 cm. 120x120x2 cm.StairsRisers