Granite step stone stairs advantages: 1). Factory direct, Quarry owner 2). Ten years experience. 3). Good packing Stone Step:1.Color: ... grey, white, black, yellow, green, red, brown and etc.; 2.Standard Size: Step,100-150x33cm, Riser,100-150x17cm, other sizes ... , countertop, paving stone, curbstone, monument, etc Granite step stone stairs with high quality and low price