Are you looking for markers that will work in your Cricut Explore? Here is a list that I know to work. Images link to Amazon.
Pilot Precise
Recollection Pens
Cra-Z-Art Markers (these are a finer point)
Crayola
Pens I haven't tried or heard they work but they seems to be the same size:
Crayola Metallic
American Crafts