Granite Stair Step,Riser,Landing 1.Spiral, Circular, Straight 2.Polished, Honed, ... 3.Red,Black,Grey,Yellow,White,Pink. Product Name: Granite Stair Step,Riser,LandingWe are producing inside and outdoor Natural Granite ... other customized designs2. colors: gray, pink, red, black, white, yellow, brown,3. Dimension:Thread:(120-150)x(30x45)x2/3cm, Riser ...