Package Included ?61 keys in total (2xRow 1 1xRow 2 1xRow 3 1xRow 4) Row 4 is the top row such as 1 2 3 4 5 If you use it on Planck you can put the novelty keys as your wish,Even esc use R4 orange key,it does not look bad. Details This link is only the keyset for Planck Preonic Niu40. The thickness is about 1.5mm. Compatiability Planck Preonic Niu40 After 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.