Get it dense and keep it smooth. Cat Tandem Vibratory Rollers do that and more. Caterpillar offers a vibratory system for every application. Most models have high frequency combined with low amplitude that match high paving speed on thin lifts as well as low frequency with high amplitude that match low paving speed on thick lifts of stiff material. As stand-alone units or as complements to high production tandem rollers, Cat Utility Rollers set the standards for versatility and reliability. A wide range of drum widths lets you precisely match the machine to the job requirements—whether it's a narrow shoulder, a patching project, a parking lot or a bicycle path. Vibratory systems are characterized by high frequency for fast working speed and high compaction energy for getting density in the fewest passes.