61 keys in total (2xRow 1 1xRow 2 1xRow 3 1xRow 4)
R4 is the top row such as 1 2 3 4 5
If you want an additional 2u space for Preonic new edition,just add usd1 via below link
DetailsThis link is only the OEM keyset for Planck Preonic Niu40. The thickness is about 1.5mm. The printed ones is laser eteched,the blank ones is no legend
CompatiabilityPlanck Preonic Niu40
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.