https://www.amazon.com/Megacast-Professional-Jewelers-Blades-Wooden/dp/B089XSPBJL/ref=asc_df_B089XSPBJL/?tag=hyprod-20&linkCode=df0&hvadid=459730407112&hvpos=&hvnetw=g&hvrand=12441154313041499455&hvpone=&hvptwo=&hvqmt=&hvdev=m&hvdvcmdl=&hvlocint=&hvlocphy=9015405&hvtargid=pla-942898379922&psc=1

Here is an Amazon link to an all in 1 package including a considerable stock of blades, should last you close to a year if you are making rings every day.