Air bubbles in wet concrete are detrimental to the strength of concrete. It is necessary to remove them from the concrete before the mixture hardens. Our vibratory poker is designed to effectively performed to expel the entrapped voids and compact the concrete. Based on pendulum motion, the high rotation of drive unit transmits as high as 9, 000 vibrations per minute into the poker head through the flexible shaft, ensures maximum compaction for the best possible finish. Technical Specifications: Vibration rod ZDB-160 Engine: Honda GX160 5.5HP Poker Head Dia: 35mm Engine speed: 3600rpm Rope length: 6m 1# rod ( 25* 6) diameter* length 2# rod ( 28* 6) diameter* length 3# rod ( 32* 6) diameter* length 4# rod ( 38* 6) diameter* length 5# rod ( 45* 6) diameter* length 6# rod ( 50* 6) diameter* length 7# rod ( 60* 6) diameter* length 8# rod ( 70* 6) diameter* length