Jewelry bit

These diamond jewelry bits are essential for shaping and grinding the edges of glass pieces or creating grooves in stained glass for wire wrapping. But these grinder bits aren't just for glass. These workhorses are great for shaping all kinds of material, including stones, tile and ceramic! Comes in a variety of different grits with two different thickness sizes; 1mm and 1.4mm. Bits come with a set-screw and Allen wrench. Key features All bits are measured for trueness, which insures that every bit will spin properly on the motor shaft These bits fit 5/16" (7.94 mm) arbors Specifications Outer diameter: 1" (rim) Inner diameter: 5/16" Steel body 1mm rim grinds a groove for 20 and 22 gauge wires 1.4mm rim grinds a groove for 16 and 18 gauge wires Video Using the jewelry bit Prop 65 warning for California residents