Polishing media, Steel Satellite Polishing media,Steel Ball:Different size are available on requestSteel media ... Often, mirror-like finishes on components can be achieved.Steel media used in barrels, vibratory finishing machines for various metal ... diecastings, cast aluminum, hinges, bearing cages, pistons, sintered bushes, watch parts, zip sliders;burnishing of coin blanks and stampings,jewellery ...