Bailih fitness spinning bike V5 Transmission: belt drive and 1 pc crank chain Brake System: with leather brake system Ragular knob for seat post high adjustable Resistance System:Rub resistance adjustin system Wheel weight: 21kg N.W.:50kg G.W.:54kg Production size: 1135*1035*620mm Packing dimension: 1160*900*235 spin bike mm