Material: Stainless Steel 304. Finish: Satín. Made of 1-1/4” (31.75mm) 304 grade Stainless Steel tubing. Supplied with (2) SOLID 304 Stainless Steel mid post. Requires two 5/8” diameter holes. For use Wood doors 1-3/8” a 2-1/4” thick. Includes screws.