Model : SV28 / SV28B Vibration Head (mm) : 28*470 Vibration / min : 9800-12000 Shaft roate speed : 3000-3600 Amplitude (m / min) : 0.8 Flexible shaft (m) : 6 Weight of hose : 14 Join type : PIN TYPE BUTTERFLY TYPE Engine model : S20 / S160 Fuel tank capacity (L) : 3.8 / 3.6 Starting system : Recoil starter Packing size (L*W*H) mm : 515*380*515 / 515*425*445 Net weight (KG) : 22 / 22. Packing size of hose(mm) : 870 (L) * 660 (W) * 80 (H).