1.Material: G623 Granite 2.Color:Light Grey 3.Regular Size: Stair steps 100~150 x 30~35 x 2/3 cm Stair risers 100~150 x 15~20 x 2 cm 4.Surface Finishing: Polished, Honed, Flamed, Bush-hammed, Sandblasted, Chiseled, Natural split, Tumble, etc. 5.Edge Finishing: Full Round, Half Round, Bevelled, etc.