MICRON plastic snap-on curtain grommets and washers are ABS-material, two-piece grommets designed to snap together for a clean, modern finished hole on curtain panels and home décor projects without the corrosion concerns of metal hardware; choose your variation by size—#4 (1/2"), #6 (13/16"), #10 (1-3/8"), #12 (1-9/16"), or #15 (1-7/8")—and pick your preferred color (such as Black, White, Clear/Transparent, Pink, Red Lilac, Turquoise Blue, Off White, Baby Blue, Gray, Magenta, Metallic Brown, Orange, or Red, depending on size), with pack quantities varying by option (#4 = 25 sets; others typically 12 sets), and for cleaner cutouts you can select variations that include the matching Cutting Knife + Teflon Board; for best installation, always match the correct size tooling (cutting/setting dies sold separately).