The CLR Series High Frequency Pneumatic Roller Vibrators from Houston Vibrator are ideal for vibrating concrete forms, refractory molds, and more—for better surface finishes FASTER! Whether you need a portable vibrator or permanently installed vibrators, there is a model to suit any application.  High Frequency Roller Vibrators are designed for portability.  There are single and dual roller types in the CLR Series to suit a variety of applications. All models in the CLR and FBR Series feature a simple design and rugged construction to reduce the need for regular maintenance. There are only two moving parts –no bearings. Operation is simple - just supply clean, lubricated air by connecting your air hose to the male hose barb.  Cradle-lug Bracket sold separately.