This 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. This keycap legend is laser engravedThe keycap is made of durable PBT material,the thickness is about 1.5mm Compatiability It can be used for most Cherry MX Gateron MX Kailh MX and all other MX switches keyboard whose bottom row is 1x6.25u + 7x1.25u,space is 11.7cm. Incompatiability If the spacebar is 6u 6.5u instead of 6.25u,it can't be compatible.It's not compatible with Cosair Logitech.It's not compatible Some old Cherry keyboard whose Spacebar Capslock back hole is different,such as 1800After Service If 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.