Abstract: A device for obtaining a sample from a volume of hay. The device is provided with a hollow tube member having an intake end and a discharge end. The interior diameter of the hollow tube is at a minimum at the intake end. The intake end is also provided with a resharpenable and serrated cutting edge positioned about the perimeter of the intake end of the hollow tube. A spiral ridge is provided on the exterior of the hollow tube member in proximity to the intake end. In use, the intake end of the hollow tube is inserted into a volume of hay, such as a bale, roll, or stack, and the hollow tube is rotated. The spiral threads engage the volume of hay and the user of the device may selectively rotate the hollow tube such that it is drawn into the hay or withdrawn from the hay. The hay cores which are gathered into the hollow tube are collected in a collection container attached to the hollow tube member.