This keycap is made of Polycarbonate (PC) plastic. Fit on 1u (R1) key; and compatible for Cherry MX / Gateron / Kailh / Razer / others MX clone mechanical switch. Designed for backlit mechanical keyboard especially, but you can put on non-backlit keyboard too.
* Due to the light and screen difference, the item's color may be slightly different from the pictures.