“Satin finish, 1.25” or 1.5” diameter. Has best grip, and is easy to clean. Made of 18/8 (304) stainless steel with concealed flanges. Will not rust. Flanges have 5 mounting holes (easy install into blocking), including 2 slotted holes for speed install when using WingIts. Installs easily. Completely waterproof with either of WingIts’ patented Grab Bar Fastening Systems”