Tamping Rammers deliver a high impact force (high amplitude) making them an excellent choice for cohesive and semi-cohesive soils. Frequency range is 450 to 700 blows a minute. Rammers cover three types of compaction: impact, vibration, and kneading. Ideal for use on soil and asphalt, backfilling for pipe/cable installing, and the best choice of trench works.