Descriptions: Shelf Support Pin Material: These cylindrical pin made of Carbon Steel, very smooth surface, anti-rust, anti-corrosion, strong and durable for long using life. Align and Join Components: Pins are non-threaded cylindrical fasteners, fix a component's position, join components, or maintain alignment between them. Chamfered Ends Design: Chamfered ends add a hint of detail, allow of easy insertion of dowel pins into any hole, while also can make installation more easily.