Features: Accurate dynamic balanced flywheel The weight of flywheel is 18kg Durable ribbed belt driving system Quick and convenient rub resistance adjusting system Supply the bidirectional turning system PACKING:1pcs/CTN G./N.W.48/43KGS MEAS.:107.5*26.5*86cm Assembly Size:111*49*113cm 20'GP:117PCS 40'PCS:225PCS 40HQ:241PCS