This link only sells OEM profile Keycaps,no keyboard included.There is a puller presented in package.
This keycap is made of 90% PBT.The thickness is around 1.5mm.The printed one is laser etched.The blank one is no legend
This keycap is compatible with most 61 standard ANSI MX switches keyboard whose bottom modifier key is 1x6.25u 7x1.25u.Space is around 11.7cm.
It is not suitable for use with Corsair, Razer, or Logitech keyboards. Additionally, keyboards with layouts of 64, 68, 75, 84, or 96 keys are also incompatible with it.