Description: Versatile Use: These shelf support pins are designed to fit 18mm-20mm thick wooden and glass shelves, making them a versatile choice for various home or office shelving needs.Quality Material: Made from durable PC plastic, these shelf support pins are built to last, ensuring long term use and stability for your shelves.Product Dimensions: Each shelf support pin measures 5.6cmx1.8cmx2.1cm/2.20inchx0.71inchx0.83inch, providing a compact yet sturdy solution for supporting your shelves.Package Contents: This pack includes 30 shelf support pins, offering ample quantity for setting up multiple shelves or replacing old or lost pins.Easy Installation: these shelf support pins simple design can be easily installed without the need for professional help. Size Chart: 5.6cmx1.8cmx2.1cm/2.20inchx0.71inchx0.83inch Package Includes: 30Locking Shelf Pegs Note: Please allow slightly errors due to manual measurement and different monitors.