Cat Pneumatic Rollers work effectively on a wide range of applications. Models with oscillating wheels are used on sub-grade soil, granular material or cold mix to create additional density and find weak areas so they can be repaired before paving. Cat Pneumatic Rollers are also used on hot mix asphalt in the initial breakdown and intermediate phases to increase density and to seal the surface of the mat. Lightweight models create a tight bond when applied to chip and seal surfaces.It's easy to tailor the ground contact pressure to the job. Cat models have easy-to-fill ballast tanks, modular steel ballast configurations and various tire options.