🔹🔹. Shank diameter: 1/8 inch (3 mm), Mini diamond mounted grinding head perfect for jade grinding, mold repairing, glass carving, cast cleaning, burr welding, polishing .
🔹🔹. These Grinding drill bits compatible with most Dremel universal power rotary tools, fits most of the electric machine, engraving machine, hanging machine, pneumatic engraving pen.
🔹🔹. Rotary diamond bits are great for Grinding most hard materials such as iron , glass, ceramics, tile, brick, fiberglass, stone, rock carbide, gold, platinum, silver, metals
🔹🔹. Cylinder Head Shape ,60 Grit grinding bits, grinding head diameters : 3mm 4mm 5mm 6mm 8mm . Great for shape curves in stained glass .
🔹🔹. Good gift for DIY enthusiast hobbyist or craft fan, wear-resistant, maintain sharpness, not easy to fall off.