With the Cart-Away Skweez Pump you can spray on concrete anywhere you need. This pump was built to last and prevents expensive metal parts from wearing. This 2” Cart-Away Skweez Pump will move about 6 yards of concrete an hour. The Cart-Away Skweez Pump moves concrete similar to squeezing a tube of toothpaste. The peristaltic action uses rollers that roll along a rubber tube, squeezing the material out through the hose. As the hose returns from a “squeeze”, it creates a vacuum, sucking the concrete from the hopper and refilling itself. Simple – Effective – Efficient.