This burnisher looks like a bezel roller but don’t be deceived. The business end has been ground to an angle and polished to a high shine. This burnisher refines the shape of a bezel prior to soldering it to a backplate. To use it place a soldered or fused bezel around its intended stone and burnish the bottom of the bezel all around. The burnishing action makes the bezel conform to the stone and the angle prevents the tool from pushing the top of the bezel over.