These are shelf supports, a plastic rod on which a shelf can rest, in cabinets and drawers. With 4 pieces a shelf can rest on these pins. This is what you need when you're making your own cabinet or repairing an existing one. The diameter of one side is 5 mm, the other side is 6 mm.
length: 15 mm, diameters: 5 mm / 6 mm (see photo) number of supports in this set: 120 pieces
Not exactly the product you are looking for? Also take a look at the other variants in the categoryShelf supports.