Bullnose Steps & Risers Silver Granite 900x400x40 From £47.00Garden stone staircase includes two main components: Stair Treads and Risers made of silver grey granite flamed, stair stone has a bullnose edge. Stair Treads: These are horizontal surfaces people use to step up and down the stairs, providing stable platforms for walking. Ours are made of Silver Grey Granite with a bullnose edge. Risers: Positioned vertically in front of the Stair Treads, Risers prevent feet from slipping and add a decorative touch to