Features: Type: For the concealed mounting of shelves(no visible support). Usage: Angle adjustment via supporting pin which presses on the rear plate when turned in. Notice: Each bracket holds 10lbs. For heavier shelves please add extra brackets to distribute the weight.Specifications: Material : Cold Rolled Steel Color : Gold Plating Rod Length : 75mm/ 2.95"Rod Diameter : 10mm/ 0.39" Total Size : 79 x 70 x 15mm/ 3.1" x 2.75" x 0.59"(L*W*H) Hole Distance : 42mm/ 1.65" Thickness : 3.8mm/ 0.15" Net Weight : 538g ?Package Content: 6pcs x Shelf Brackets 12pcs Strong Screws 12pcs Wall PlugsHOW TO USE BLIND SHELF SUPPORTS?: STEP 1: Place your first hidden bracket against the wall, using a spirit level to make sure it's level. Mark the fixing-hole positions with a pencil. STEP 2: Using the pencil marks, drill holes into the wall. Always choose screws or fittings that are suitable for the material of your wall. Screw the bracket into place. STEP 3: Slide the shelf onto the bracket to check that it's level (use the spirit level to make sure). Once you're happy with the position of this shelf and the way it looks, slide it back off the bracket so that you can position the rest of the brackets. STEP 4: Once all the brackets are in place,slide the shelves on and fix into place with the small screws provided with the shelf, using the pre-drilled holes on the underside of each shelf.Notes: 1.The colors may have difference as the different display, please understand. 2.Please allow 1-2mm error due to manual measurement, please make sure you do not mind before you bid. ?QUALITY GUARANTEE: Any product problem you can contact us by order number for Refund or Replacement.We will reply you within 24 Hours and solve your problems until you're satisfied.