... 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 are available upon request; 3. Normal thickness: 2cm, 3cm and ect ... +/-1mm, +/-1.5cm or +/-2mm, The quality requirements must be comfirmed by customer. Welcome to inquiry ... step stone stairs with high quality and low price