With Regard To Frameless Shower Doors, Ranbo Hardware Offers A 6" Back-To-Back Tubular Diameter: 3/4", Compatible to Most Glass Shower Door Thickness Range From 1/4" to 1/2"(6 to 12 mm) Widely use for office,barn,hotel,home gate handle as pull or push to open Install Require: Glass Door Hole Diameter Required 1/2" (12 mm) / Hole Spacing 6" (152 mm) Center-to-Center Length Made of strong and thick stainless steel,strong resistance to rust, corrosion, and deformation and long keep a good outlook When you choose this back-to-back handle, it complement to the decor of most shower door, you can rest assured that it will be easy to install, and will serve its purpose beautifully for Long time application With 5 years Warranty.