Physen&reg; Power Lock Suction Towel Bar Retractable Towel Bar with Rotatable Suction Cup (Green) Sticks to shower tiles,mirrors and other smooth surfaces Durable plastic build quality.Retractable design,can be adjusted to up to 16.9 inch Space-saving design.Material:ABS No assembly required.Retractable design,can be adjusted to up to 16.9 inch Size:Length:38 cm/14.96 inch Sucker diameter:5cm/1.97inch