For this planter and saucer set, I first pour the Ida's white glaze over the pot and then dip the rim in a shiny Chun glaze.
This pot will fit your 4" plant. I leave the inside of my pots unglazed because the roots like the texture of the raw clay. There is a drainage hole and saucer.
If you would like your items shipped, let me know and I'll look up the cost of shipping and add that to the listing.
I am a potter in San Jose. My pottery is fired to cone 10. Please let me know if you have any questions!