Glass Clamp: With micro-adjustment screws, these glass clamps are suitable for 5-10mm thick glass. The flat base design allows it to be mounted on a square tube or other flat surface.Material: Made of high quality zinc alloy metal, ensuring quality and longevity in wet weather.Polished Finish: The polishing treatment and the protection help resist corrosion and keep it looking new after long time use.Directly Attached - Comes with 2 rubber rings to prevent shifting and keep the glass securely attached. Fixing by 3 screws, no need to drill holes.Application - Ideal for fixing the glass of balustrade, staircase, railing, etc. It can also be used to support the glass plate of the bathroom glass shelf, wine cabinet.Note: The data are all manual measurement, please allow some error 1 - 3cm, due to the light and display difference, there will be some color difference, depending on the physical object received.