Mont Hard Single Side Towel Bar 24inch; in Brushed Nickel Finish for Frameless heavy Glass Shower Doors 24" Single Side Towel Bar without Metal Washers Finish: Brushed Nickel Diameter: 3/4" Fits Frameless heavy glass shower doors from 1/4" to 1/2" thick Glass Door Hole specifications: 1/2" diameter holes 24" Center to Center