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.