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An Electric Needle Vibrator is a tool used in concrete construction to consolidate or compact freshly poured concrete. he vibrator consists of a motorized unit with an eccentrically rotating shaft (often referred to as a needle orï attached to the end. They are commonly used in applications such as slab pouring, column casting, and wall construction. This is particularly useful in situations where air bubbles need to be removed from the concrete mix to ensure uniform density and strength throughout the structure. Electric Needle Vibrator is available in various sizes and power ratings to suit different types of concrete construction projects.ï