Descriptions:Material - The shelf pins are made of zinc alloy with a smooth surface and no sharp metal burrs. These pins are precisely designed with one-piece molding, high strength, and strong load-bearing capacity, and can withstand considerable weight without bending or breaking, providing support for your shelves. Its solid structure guarantees longevity and durability.Design - The shaped profile of these pins ensures that they are securely fixed in the pre-drilled holes of the cupboard, reducing the risk of displacement. You can choose to screw the screws into the holes to fix the partitions, or not. The design with holes can better meet your various needs.Easy To Install - To get a snug fit on cupboard shelf nails, an anti-slip silicone tip to grip the glass, your holes should equal or slightly smaller than the diameter shown.