PBT Double Shot PBT is without a doubt the most durable and most satisfying plastic used for keycap construction. This material is rigid and has distinguishable dense sound signature. Tai-Hao PBT keycaps feature a medium grit texture for the right amount of grip for a unique typing experience ANSI Layout This set is compatible for commonly used North American ANSI layout consisting of 104 keys including the number pad and a 6.25U space bar. Please make sure that your keyboard uses this layout. Cherry compatible switches These keycaps are compatible with Cherry switches and other clones that feature the same switch stem style such as Gateron, Kailh (excluding low profile), Zeal and more. Compatible Layouts Full Size Layout - YES TKL Layout - YES Compact 60% layout - YES 65% layout - NO (does not include special shift/Fn/Alt keys for 65% layout