325B L excavator w/ LaBounty Concrete Pulverizer. Base Model: NZG 325B L excavator. Scale: 1:50. Here is my custom 325B L excavator with the UP20. concrete pulverizer from Steel city. The concrete pulverizer opens, crunches, and spins completly around (shown here with jaws closed) Jaws completly opened. Pic #1 to show spinning motion