The VRH Dual Roller Series portable vibrators are ideal for applications which respond well to high frequency, adjustable rotary vibration. In applications such as placing refractory and other lining materials, concrete, or similar materials, Vibratek’s VRH Vibrators shorten pouring time, speed consolidation and increase compaction. VRH Dual Rollers also aid material flow through hoppers, bins, railcars, chutes and screens.