1. 13, 18 or 22kgs flysheel 2. New model 3. 3pcs crank EXERCISE BIKE Product Name EXERCISE BikeITEM NO BK5100Description CTN SIZE:1195*865*280(MM)ASSEMBLY SIZE:1400*490*1070 (mm)FLY WHEEL13 KGSNET WEIGHT:38KGSGROSS WEIGHT:43KGSLOADING Q’TY:238PCS/40HQ 94PCS/20FT EXERCISE BIKE