PBT Dip Dye & Sculptured Cherry Profile KeycapsCompatible with Cherry MX switches and related clones, these keycaps are made of super-durable PBT plastic. They’re designed in Cherry profile, and they’re finished with Dip Dye & Sculptured Tech . Attention:Keycaps only, not including other things.You can use those keycaps in Blue zone at a MX mechanical keyboard.