USA Pana 3/32" Smooth Round Top Carbide Small & Large Variation - Grit Size: (5XC to Extra Fine)

Does this bit fit any efile? i have the markarrt one someone mentioned it didn’t fit there’s because of the small pana letters on it.

What is the difference between 4xc and 5xc? and can i use it to remove dipping powder

Can this be used in both directions?

Can this remove encapsulated gel nail designs?