This kit is made with only aluminum and stainless steel material, and powder coated for interior or exterior applications. This handrail is designed for wet environments such as exterior and bathroom environments. All hardware and matching screws are stainless steel. The brackets are made with stainless steel plate and aluminum round bar for high strength and durability in the elements. The brackets are installed using stainless steel self tapping screws into the base of the aluminum handrail. As such, they can be moved along the base of the rail to insure that they are able to mount directly into wall studs. The brackets come with wood screws to install into wall studs. Designed and manufactured in North Carolina, USA. These handrail kits are made from powder coated aluminum to give a simple and elegant look that matches your modern décor. The handrails are made from 1.5” round aluminum stock tube to allow for comfortable daily use. The distance projection from the face of the handrail to the wall when installed is approximately 3.75 inches. High strength construction meets load requirements of 200lbs or more. Check your local zoning for any additional requirements. The handrails are designed to have a minimum of 1.5" clearance from the wall to the back of the handrail to meet standard clearance code requirements (see images for technical dimensional drawing). Matching Stainless steel screws are included. The handrail brackets are designed to be mounted directly into wall studs. Powder coated satin black with a gloss level of 21-35% For indoor or outdoor use. The handrail brackets are made from 1/8 inch flat stock stainless steel, 3/16 inch flat stock stainless steel plate, 1 Inch solid aluminum round bar, and ½ inch solid aluminum round bar