Bronze balls are used as carriers for the polishing of various horology pieces, in particular soaked pieces like pinions, screws, pull-out pieces, wheels, etc. Liquid compunds are the optimal work bases of the modern techniques of Tribofinition. Thanks to their high cleaning capacity, they keep the abrasives clean and prepare them for the Tribofinition treatments. Application: the balls size has to be chosen according to the size of the pieces that have to be polished. Abrasive: ASCO diamantine from standard to very fine, to be mixed with the balls and the lubricants.