This is a set of F20 (OG) diamond router bits for 3/4" (2cm) granite, position 1 through position 4. Position 1 (or 0) is 30 grit diamond, position 2 is around 70-80 grit diamond, position 3 is around 200 grit and position 4 is around 400 grit diamond. With this set of diamond router bits, you can profile and polish OG edges with ease. They come with both 8mm threaded shank and 10mm threaded shank to fit on most portable routers such as Masters and Sectors.
Made in Korea.
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