A set of wool bobs for polishing, grinding, and cleaning. They work perfectly with diamond polishing pastes and will help to polish the areas which are difficult to reach. Bullet-shaped heads are usually used on hard materials such as iron, copper, steel, etc. The cylindrical grinding head is suitable for wood, plastic, aluminum, and other soft materials. They can be used with electric drills, electric grinders, or other rotary tools A set of wool bobs designed for general cleaning polishing and buffing. Recommended for use with TechDiamondTools Polishing Lapidary Pastes. For glass polishing, watch polishing, crystal polishing, gun polishing, metal polishing, ceramics polishing, polishing, flattening, sharpening, lapping, stropping, gemstone polishing, scratch removing, stock removal, knive sharpening Perfect for opal lapping and polishing, colorless gemstone polishing, stone lapping, stone polishing, safest possible application to pretty much any surface Creates shiny mirror surface and/or sharpest edge.