LDEXIN 30pcs 3mm/0.12" Cylindrical Head Diamond Drill Bit Diamond Grinding Head Mounted Burr Point Jewelry Beach Sea Glass Shells Gemstones Lapidary Grinding Rotary Tool 3mm/0.12" Shank 3mm, 30pcs sold2025 longer life and low working

longer life and low working temperature

made of high-quality diamond

Coin Cleaning

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LDEXIN 30pcs 3mm/0.12" Cylindrical Head Diamond Drill Bit Diamond Grinding Head Mounted Burr Point Jewelry Beach Sea Glass Shells Gemstones Lapidary Grinding Rotary Tool 3mm/0.12" Shank 3mm, 30pcs sold2025 longer life and low workingLDEXIN 30pcs 3mm 0. 12" Cylindrical Head Diamond Drill Bit Diamond Grinding Head Mounted Burr Point Jewelry Beach Sea Glass Shells Gemstones Lapidary Grinding Rotary Tool 3mm 0. 12" Shank Experience needed, you may break few bits during practice. Use with water do not run dry. Shape : Cylindrical Tip; Shank Diameter(Each) : 3mm 0. 12"; Total Length(Each) : 45mm 1. 78" Diamond Coated Length : 10mm 0. 39"; Tip Dia : 3mm 0. 12" Case Size : 145 x 61 x