Stair Nosing Lip Height 1 1/8 in Nose Style Square Installation Hardware Included Yes Surface Design Raised Discs Color Black Edge Style Round For Surface Type Existing Concrete Masonry Metal Surfaces Wood Surfaces Includes Stainless Steel Screws Indoor/Outdoor Indoor Outdoor Installation Method Concrete Anchor Screws Material Aluminum Overall Depth 9 in Overall Width 30 in Product Type Anti-Slip Stair Tread Thickness 1/4 in Two-Stage Installation No