BLI Vibrator Shaft Needle Pendulum BNHD Steel Tip Size:44mm x 9m Light and durable with greater parking lots and other Light and durable with greater resistance to corrosion than standard edgers The retarding compound in Sika® Rugasol® 90 combines with cement at the surface and delays the normal hydration on the surface of the concrete (high cement contents and temperatures will reduce the retardation) The Betonelli heavy duty concrete vibrator produces high frequency vibration which allows efficient compaction of low slump concrete mixes The rotor of the vibration is supported heavy duty self aligning bearings that produces superior pendulum motion that causes superior vibration at the tip of the vibrator head