Features: Make from PVC and steel materials, it is durability and have strong load-bear capacity. Designs with self-tapping screws, more durability and not easy to loosen and wear. They can effectively prevent frame from shaking and keep board level and stable. High practicality, easy to fix. Equipped with a dust cover, beautiful, wear-resistant, and antioxidant. Widely used in shelf holes of cabinets, bookshelves, display cabinets, furniture, closets, wine cabinets, cutlery racks, etc. Suitable for home, offices, hotel, shop and other scene. Specifications: Material: PVC+steel Type: Clear/White/Black Quantity: 10pcs/50pcs Size: As showns in the picture Note: Please allow 1-2cm errors due to manual measurement, make sure that you not mind before order. Due to difference between different monitors, the picture may not reflect the actual color. Package includes: 10/50pcs Self Tapping Screw