Two Bits for the Price of One Aanraku brings you Twofers - superior quality, low-cost grinding bits. Use jewelry bits to grind a groove into the edges of jewelry for finishing and wire wrapping. The groove created in the edge of the cabochon fits 20 gauge wire for a secure wire wrapped finish. A huge time saver Best of all, your jewelry pieces will be more durable. Bits fit most glass grinders. Diamond mesh grit is 220 for fine grinding. Step-by-Step: Wire Wrapping Using a Jewelry Bit See images below 1. Grind a groove around edges of glass cabochon with a jewelry bit. 2. Wrap wire around cabochon firmly from bottom, ending at top. Grip wire with pliers and twist to secure. 3. Bring wires up and wrap around a dowel 1/4" away from cabochon. 4. Using wire nippers, trim ends around base to secure and tuck in ends. Images from "Innovative Adornments" book #6294. Artist: Jayne Persico.