... disc 4:weight:4.2kg new improved bicycle conversion kit : 1:36-48-60v 250-350-500-800w2:dropout:100mm3:brake type ... :powerful design Electric bicycle kits covers:1) A:motor with doublewall rim DC 36V, 150W, 250W, 300W; DC 48V, 150W, 350W, 500W. front ... assemble13) 200w for Australia and new zealand200-250w for Euro ,350-800w for AmericanOuter packing:Carton with polythene on each side ...