Specifications: Model: Zn25 Zn35 Zn50/50c Zn70 (mm) diameter: 25 36 51 68 (Hz) most frequency in weight empty: 230 200 183 183 (mm) most swing in weight empty: 0.5 0.8 1 1.2 (kw)input power: 1.5 1.5 1.5 2.0 (v)voltage rating: 380V3~ 380V3~ 380V3~ 380V3~ Cm/hsinking: 3-4 3-4 3-4 3-4 M3/hproductivity 2.5 5 10 20 Mmbar active length: 350 423 451 480 Mmflexible shaft diameter and length: 8*4000 10*4000 13*4000 13*4000 Mmtube diameter and length: 24*13*3970 30*16*3985 36*20*3961 30*20*3960 Kg weight: 35KG 37 47 53