G636 Granite stair riser We supply many kinds of Granite Stairs / ... , G682, G684, G687 and so on. G636 Granite stair riser 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. ... -slip strip, bronze bar etc.; 5. Packing: Fumigated wooden crates; 6. Quality control: Polished degree: More than 85 ...