MroMax 2Pcs Invisible Floating Shelf Brackets, 76mmx78mm, Adjustable Hidden Blind Supports For Hidden Shelves Silver Tone

Specifications: Material: Carbon Steel Finish: Nickel plated Color: Silver Tone Shaft diameter: 12 mm / 0.47 inches. Dimensions (approx. ): 76 x 20x 78mm/3 x 0.8 x 3.1 inch (L*W*H) Package Contents: 2pcs x hidden bracket INSTALLATION GUIDE Tools: 1. Each bracket needs screws x2, anchors x2, washer x2. 2. You need Level, Drill, Electric Screwdriver, Hammer. (You may need a drill press if the shelf itself is) STEP: 1. Drill holes on the wall - You need to use level to mark cross on the wall to make sure you drill the holes in the right place. 2. Install the bracket - You can use washers to install the bracket firmly. Electric screwdriver is highly recommended. 3. Adjustment - Slightly adjust the bar and the height of the bracket. 4. Insert the shelf - just insert it into it, what is more important is to prepare the slot for the bracket. Not only for the rods, but also for hole brackets.