4 Pieces Glass shelf support, Wall shelf support, with screws, fixable thickness 3-15mm, You will get --- Our products include 4 adjustable brackets, each with screws, 11mm hole spacing and 3.5mm hole diameter, for 3-15mm thick glass and wood (the rest of the detailed dimensions are shown in the picture). Durable Material --- Made of thickened zinc alloy, it has excellent corrosion resistance and durability, with a smooth surface that does not hurt not your hands, more convenient and safer, can be used constantly in any environment. Adjustable Size --- Can be adjusted to a maximum thickness of 15mm, providing qualified flexibility. Stable construction and exquisite craftsmanship, with fine surface finish which is more water-proof and rust-proof, effectively scratch-resistant and wear-resistant. Practical Design --- Black washers have been added for hold glass in place and increase friction to prevent slippage. Easy to install, just mount it to the wall with the included screws and adjust the screws and thickness to secure the shelf. Wide Applications --- Contemporary style can match various decor styles and is suitable to a variety of scenes. Ideal for kitchens, balconies, bathrooms and bedrooms with a variety of glass and wooden furniture. Note: The data are manual measurement, please allow a 1-3cm error, due to the differences between the light and the display, there will be a certain color difference, the specific received in kind prevail.