30 pezzi punte diamantate 0,4 mm piccole frese foro seghetto gioielli strumenti per pietra vetro

JINGLING 30Pcs 0.4 mm Diamond Coated Hole Saw Drill Solid Bits Jewelry Gemstone Glass Tile Marble Code 4A. The diamond coated hole saw suitable for use in drill hole on jewelry, gems, glass, marble, tile or granite.

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