Aukey designed these caps to mimic the keys of a vintage typewriter, which were (Editor: and are, you young whippersnappers) typically rounded. The keycap market is wide, deep, and often weird, and even these caps are a bit outside of the norm. With these, you're getting a fun look moreso than sublime quality. These caps are made of ABS plastic, and they come with a keycap removal tool to make the replacement process easier. They're Cherry MX compatible, which means you can use them on switches from manufacturers such as Kailh, Gateron, and Outemu.