Description Contents and Dimensions: 6 Floating Shelf Brackets (Mounting Screws Not Included), Product Dimensions: 70 ;x75 x 14mm/ 2.8 x 3 x 0.55 inches (L*W*H); Mounting hole distance: 42mm/1.65 . Sturdy and durable: These brackets are made of high-quality stainless steel, precision welded, durable, Corrosion resistant and durable. Abrasion-resistant, rust-resistant, inflexible, and provides strong rolling resistance. Easy to Install: With 2 mounting holes, it can be easily installed in minutes with just some basic DIY tools. Applicable Size: The 3-inch deep shelf bracket is strong enough to be safely installed to support a certain weight, and the support plate width is from 100mm to 300mm. Full Hide: Remove 0.55 of the wood with the planer saw tool. Designed to be completely hidden behind a shelf, it's compact and easy to hide.