tube's ID:12-70mm,L:30-400mm. One cake at one time,500-600cakes/a worker/day, Automatic fill mud,auto-matic return,full a tube's ID:12-70mm,L:30-400mm. One cake at one time,500-600cakes/a worker/day,Automatic fill mud,auto-matic return,full automatic control in the fireworks tube bottom.Oil pressure:30T,so it is firmly and equality.