HHKB Keycaps, English Layout, Blank, Black PD-KB400KTBN. I purchased these to customize a keyboard with printed keys to be blank. Ultimately, I never used them, and I also sold the keyboard itself, so I am offering this keycap set for sale. Keycap set (blank) compatible with HHKB Professional series English layout models. * Compatible with the following HHKB Professional series: HHKB Professional, HHKB Professional 2, HHKB Professional 2 Type-S, HHKB Professional BT, HHKB Professional HYBRID Type-S, HHKB Professional HYBRID, HHKB Professional Classic Set of 60 replacement keycaps (includes keycap puller, instruction manual (replacement procedure, key layout chart)) (The condition is almost new, but please refrain from purchasing if you are overly concerned about minor details, as the item has been opened once and stored at home.)