The Norseman Super Whipper floats rearwards on a suspended parallel linkage, which means the speed of tractor allows it to precisely follow the terrain without the need for treader wheels.The semi unit mounted design means that it will not effect row unit down pressure. They have simple up and down travel limit adjustments for when you need them but in most conditions these are not required. Robustly construction includes sealed for life bearing cartridges and AR400 wheels.