Cheese plough series IF model IF-6 Chisel plough IF model IF-2,1H Driving plough series IF model IF-4,5 Cheese plough series IF model IF-6C Diesel engine plough series IF model IF-4,5H Diesel engine plough IF model IF-3,3H Chisel plough IF model IF-3,3H Diesel engine plough IF model IF-2,7