Specifications: 30.5x30.5(12'x12'), 45.7x45.7(18'x18'), 61x30.5(24'x12'), 60x30, 40x40, 60x60 x 1, 1.2, 1.5, 2, 3cm, etc. Surface Finish: Polished, Honed, Flamed, Brushed, Sandblasted, etc.