Abstract: A roller assembly includes a first rail and a second rail each coupled to a pickup box. A pair of first wheels and a pair of second wheels are coupled to a toolbox. Each of the first and second wheels rollably engages the first and second rails. The rails and wheels allow the toolbox to be moved along the pickup box. A plurality of pins each removably extends through an associated one of the first and second rails. Each of the pins is engageable with an associated one of the wheels. The pins may retain the toolbox at a selected point on the pickup box.