The technical parameter: 1 . Application scope: Polishing, from the shaping to lens face, of various complicated type moulds cavities, narrow groove, narrow slot, blind hole, plane and different kinds of hard alloys. 2 . Polished material: Various kinds of metal, hard alloy, glass, malachite and agate, etc.. 3 . The roughness of processing surface: 4 . Polishing medium: Artificial diamond abrasive pastes or diamond abrasive pastes. 5 . Operating frequency: 26-31KHz. 6 . Power: 220 V ?0% 50 HZ 7 . Max consumption: 350W 8 . Overall dimension: 325 * 135* 300mm 9 . Weight: 15Kg