Product Details Cup burrs are used smoothing the ends of wire if you make your own ear wires for example as well as on a claw set ring, the end of the claw holding the stone is domed, this has been rounded off with this type of burr. This classic claw cluster finisher ensures jewellery will not catch items of clothing when worn. Used in a Dremel or Pendant drill, its best to keep the speed low to avoid wearing the teeth inside the cup which shape the dome. Can also be used in a Pin Vice too Ø2.35mm Shank Cup drills Concave cutter cup Medium serrations
