For Retrofit or New Installation, No Glass Fabrication Required. Gordon Glass® Towel Bar Base Brackets for Frameless Shower Doors 1/8", 5/32", 3/16" and 1/4"Thick Installation Notes: Use included Clear Silicone Sealant to secure Towel Bar Base Brackets to the glass shower door. Finish: Bright Chrome. Package includes: Two towel bar base brackets, 2 screws and one squeeze tube of clear 100% RTV silicone sealant, .5 oz