The onion topper VT 170 is used for an efficient haulm reduction and pre-harvest treatment before windrowing. The machine can be used for both front- and rear attachment. The rotating blade sets with their innovative geometry create a high suction effect, which sets up the haulm before it is cut off by the blades. The very sensitive height guidance of the onion topper causes the machine to run very smoothly and ensures a constant cutting height at all times. With the topper, type VT 170, beds can be treated within a track widths of 150 to 180 cm. The machine is designed for combination with the GRIMME windrower, Type WV.