Solid color Blank PBT keycaps made from PBT plastic-long considered the superior keycap material-this MX-compatible set is both long lasting and resistant to the shine that occurs after long hours of typing. Compared to ABS material, PBT is less common and feel textures and more more durable. It’s dry and not easy to get oily. It won’t wear down over time like ABS does. Solid color Blank PBT keycaps set has 10 keys Only, for Arrow, WASD and Spacebar.