Stair Part Material:Aluminum Product Name:Carborundum Filled Aluminum Bullnose Stair Treads Base:Aluminum Profile Insert:Carborundum Height:14.2 mm Width:65.25 mm Function:Non slip pedestrian Safety Application:Exterior Interior stair nosing Color:Multiple colors Type:Stair parts Carborundum stair nosing Certficate:ISO:9001-2008;SGS