... , Quarry owner 2). Ten years experience. 3). Good packing Natural stone stair treads:1.Color: grey, white, black, yellow, green, ... upon request; 3. Normal thickness: 2cm, 3cm and ect.; 4. Finish: Polished, honed, flamed, sandblasted, bush-hammered, anti-slip strip, ... from our company:Slab, tiles, countertop, paving stone, curbstone, monument, etc Natural stone stair treads with low price and A grade