Material: Shelf brackets are made of premium metal with smooth coating surface, hard to rust, robustness and longevity, work well to support your shelf Dimension: Shelf brackets measure 1.89 in wide and suitable for 12 in shelves, fit most shelf pilasters, help to create more storage space for your organization needs Rubber Strip Design: Come with slip-resistant rubber strip, the shelf bracket can stick to the shelf tightly, prevent the bracket shifting and scratching the shelf Easy to Install: Insert the bracket into the shelf track, then adjust by rotating the screw, the end hook tail design makes it more firm Suitable for: Single track or twin track system, use for installing closet, bookshelf, spice rack or any other wall storage shelf Our shelf brackets are made of premium metal with smooth coating surface, hard to rust, robustness and longevity, strong load capacity to support shelves. Brackets fit most shelf pilasters, suitable for 12 inches single track or twin track system shelf, closet, bookshelf, spice rack or any other wall storage shelf. It is easy to install and adjust, saving your time and effort. Designed with rubber strip, the shelf bracket is slip-resistant and prevents scratching your shelf