Brushed Nickel Finish, Tubular 18" Single-sided shower glass towel bar. The low profile end caps are ideal for use on bypass sliding doors. Fabricated from 3/4" Diameter heavy wall brass tubing. These shower door towel bars include clear plastic handle end washers as well as interior plastic washers to protect glass against metal contact. Accommodates 1/4" to 1/2" glass. Requires 3/8" to 1/2" diameter holes for installation.