Working Width In Metres: Working Width In Metres: Product Feature Working Width In Metres: 1.8 2.0 2.2 2.4 Working Width In Metres: 1.0 Fittings Selection Perfect ground following and even cutting height Automatically Belt-tension Overrunning clutch integrated with gearbox Housing can be lifted to leave the residues back to the field Offset Options:SD swing arm or HD swing arm Guard Options:Chain guard or metal plate guard Blade Options:Hammer or Y Blades Hammer Blade SD550 could pass the obstacle and automatically returns HD550 could detect obstacles without touching by hydraulic