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Ships within 48 hours · Estimated delivery Aug 5 - Aug 10
Featuring a 5mm deep sintered diamond matrix in a durable metal bond
gemstone pre- polishing
Instant Grit Swapping
Available in coarse to ultra-fine grits (60–3000 grit)
7mm (1/2") center hole
14mm Diamond Donut Bur – 80 Grit, 5pcs Rotary Tool Grinding Bits for Glass, Stone & Ceramic Glass Drill Bit Featuring a 5mm deep sinteredDiamond Drill Bits are precision tools for fine detailing and material processing. Discover the versatility of diamond drill bits, designed with durable diamond grit for aggressive cutting, precise shaping, and long lasting performance. Available in multiple gritscoarse (40,60,80,120) for rapid material removal, and fine(240,600,1200) for detailed engraving and polishing. These tools suit lapidary artists, jewelers, sculptors, and precision craftsmen.
US$ 34.99
US$ 19.95
US$ 15973.50
US$ 48.95
US$ 17.99
US$ 19.50
