Two polishing bits I LOVE from @gesswein.jewelry that help me get a uniform polish on the inside of a ring. The first is the Premounted Abrasive Rolls this one is 1000 Grit (SKU:1037120) Now I will go ahead and say you can make these yourself or use a split mandrel but for less than $1 I prefer the convienience of this bit! I should also say you I did some additional clean up to my solder seam prior to using the 1000 grit. To finish with a mirror shine I am excited to show off the Mini Mounted Magic Buff (SKU:1076008) The soft inner core of this bit gently cradles the contours of your rings, while the innovative ultra-micro particle (approx. 1000 grit) aluminum oxide abrasive flaps bring your gold, silver and platinum rings to a mirror shine, and without the mess of polishing compound! Yes they are both 1000 grit but the Premounted Abrasive Roll gives more of a matte finish!! Both bits have a 3/32 shank and can be used with your flex shaft or Dremel and I highly recommend for folks who are using those tools to bring their work to a final polish! I also have a big polishing lathe and I find doing the inside of the ring with a flex shaft is a bit more controlled and feels safer! My flex shaft hand piece is being held by the now internet famous Jiffy Jig from Gesswein (SKU:8500608) they are backordered at the moment but more will arrive in the near future! Huge thank you to Gesswein for sponsoring this educational content they give our community code MSS5 to save 5% on your order every time you shop and they give back to the page! #polishing #polishingbits #flexshaftbits #polishingjewelry #jewelrypolishingtips