Handi-Treads Non Slip Aluminum Stair Tread, Powder Coated Black, 3.75" x 48" with Color Matching Wood Screws, Each Aluminum non slip treads are a permanent superior solution to non slip grit tape and grip paint for any wood stair or walking surface Handitread non skid treads will not rust, rot or decay Each tread mounts in less than a minute to any wood surface Mounting hardware and directions are included with your purchase.