Handi-Treads Non Slip Aluminum Stair Tread, Mill Finish Silver, 3.75" x 30" with Color Matching Wood Screws, Each Our aluminum non slip tread is a superior solution vs. non slip grit tape and grip paint and is permanent and guaranteed not to rust or wear out A single non slip safety tread can be mounted to a wood surface in under a minute with little effort using the provided color matching stainless steel wood screws and directions Each 30" long tread has 12 (twelve) pre-drilled mounting holes for quick and easy installation Our non slip treads are designed to be mounted outdoors on wood stairs, wood decks, wood ramps, wood marina decks, and other wood walking surfaces that can become slippery and unsafe. Treads can also be used in garages and basement stairs Made in the USA Please contact Handi Ramp directly for custom sizes or colors