The following descriptive information was obtained from Liberty Hardware:
"The Franklin Brass Grab Bar Anchor provides quick and easy grab bar installation. The Franklin Brass Grab Bar Anchor can support up to 500 pounds, exceeding ADA standards. The grab bar anchor is retrievable and removable, and features a rotating flange for grab bar installation at any angle. A neoprene gasket is used for water sealing instead of adhesive and the hardened T5 Aluminum is used instead of plastic for added strength. The Franklin Brass Grab Bar Anchor does not require a stud, does not require any clearance to a stud or precision wall location, and it can be used with a maximum wall thickness of 2 ½”.