SMOKE GREY Bullnose Step 900x450x20mm Porcelain Paving. Add character and charm to any Patio with our unique Smoke grey Porcelain bullnose step and riser, Smoke Grey Vitrified porcelain is ideal for a refreshingly modern look of very light grey with veins. The colours are only a reference and there may be slight colour variation with tones and patterns. Please Note: The product could be slightly different compared to the sample as they could differ with batches.