1).round hay baler specilized manufacturer 2).500mmdia.*700mm,or 610mmdia.*700mm 3).PTO transmition, 18-50hp tractor 1).round hay baler specilized manufacturer 2).500mmdia.*700mm,or 610mmdia.*700mm 3).PTO transmition, 18-50hp tractor ModelHBM-8050HBM-8070Bale sizedia.×widthφ500×700mmφ610×700mmOverallL×W×H115×130×120cm130×130×135cmWeight390kg440kgPickup width800mm800mmEfficiency2-5km/h2-5km/ ...