DetailsThis link is only the keycaps,no keyboard included.The keycap loading board is only to take photo,not included in the sold package.We will pack the keycaps in our own carton.The keycap is made of durable PBT material,the thickness is about 1.5mmCompatiabilityIt can be used for most Cherry MX Gateron MX Kailh MX and all other MX switches keyboard.IncompatiabilityIf the spacebar is 6u 6.5u 7u instead of 6.25u,it can't be compatible,such as some HHKB Cosair Logitech.You can order additional keys needed.We will produce special full set for them soon.Some old Cherry keyboard whose Spacebar Capslock back hole is different is not compatible.We have cherry 117 121 keyset owns both special Space and Capslock in other link.Some Costar stabilizer keyboard whose spacebar may be clicky for thick caps.You can adjust the wire or cut the edges of inner spacebar.This is a easy problem.If you have met this problem,just leave us message.We will help you solve it.After ServiceIf some keys missing or broken on the way,just leave us message,we will send you missing or broken ones soon.Don't worry about it and don't leave feedback immediately.