Metal metal metal metal metal metal metal Metal <ul class="a-un0rdered-list a-vertical a-spacing-mini"> <li class="a-spacing-mini"><span class="a-list-item">Packaging and Dimensions: 6 pieces floating shelf brackets (mounting screws not included), product dimensions: 70 x 75 x 14 mm / 2.8 inches x 3 inches x 0.55 inches (L * W * T); mounting hole distance: 42 mm / 1.65 inches. </span></li> <li class="a-spacing-mini"><span class="a-list-item">Sturdy and Durable: These brackets are made of high-quality stainless steel with precision welding, which is sturdy, durable, corrosion-resistant and wear-resistant. Wear-resistant, rust-proof, no bending, and with high load-bearing strength. </span></li> <li class="a-spacing-mini"><span class="a-list-item">Easy to Install: With 2 mounting holes, it can be easily installed in just minutes with some basic DIY tools. </span></li> <li class="a-spacing-mini"><span class="a-list-item">Applicable Size: 3" deep shelf brackets are strong enough to safely support a certain amount of weight and support board widths from 100mm to 300mm. </span></li> <li class="a-spacing-mini"><span class="a-list-item">Completely Concealed: Use a planing saw tool to remove 0.55" of wood. Designed to be completely hidden behind the shelf, the low profile makes it easy to conceal. </span></li> </ul>