The single-axle transport trailer KT is used for transportation of grain headers and other attachments for different types of combine harvesters. Supports can be moved and adjusted according to the type of the header. A grain header with a suspended attachment for rapeseed can be transported on them, but for this purpose, extensions need to be mounted beforehand. To support the trailer in a static position, an auxiliary wheel is mounted on the front, which can be adjusted in height.