G664 Violet red granite step We supply many kinds of Granite Stairs / ... , G684, G687 and so on. G664 Violet red granite 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 ... 85 degree, as requested, Thickness tolerance: +/-1mm, +/-1.5cm or +/-2mm, The quality requirements must be comfirmed ...