PBT blank low profile keycaps for Choc switches
MBK blank keycaps are made of strong PBT material, with a textured top surface for a better finger grip, and keep a consistent shape and feel over time. They have been mass produced since 2020, and remain a reference in the keycaps industry for low profile keyboards.
Dyed MBK were PBT keycaps colored by soaking them in a bath of dye. They are no longer produced. Some vendors might have remaining inventory, or be dyeing the keycaps themselves.