Usage Tips:[dimensions]shelf bracket, designed to support 6 inches to10inches deep shelf. (lumber board is NOT included) [material ] The bracket is die-cast formation from high-grade metal material, which is rust free. The brackets are 100% perfect 90-degree vertical angle, no need to worry about Bending deformation rebound problem. [Capacity]The Specially made alloy metal material is lighter but stronger than the others on the market. It has greater load- bearing capacity, It can to1100 pounds each pair, shelf brackets can support books,electric power tools ,, etc. Using as mantel Brackets ,Heavy Duty shelf brackets (set of 2) Fireplace Mantel Brackets, countertop support! [powder coating finished & Applicable place] Matte black coated ,durable and sturdiness. PICESA bracket comes with traditional matte black,It fits in perfectly in your farmhouse kitchen, garage, basement storage room, and backyard. [Complimentary hardware]Comes with high strength screws ,as good as your local hardware chain store. screws and anchors are for different walls. Following the steps properly, put your Pre-prepared lumber board on, you will get your perfect and stable floating shelves. Colour:Black Material:Metal Package Contents: 2 x Heavy Duty Shelf Brackets Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.