This product is a Concrete Vibrator from the Robbin brand, model SV-38, made in China. Use: Used in construction sites to compact fresh concrete and expel air bubbles to ensure the density and strength of the structure. Specifications: It features a gasoline-powered engine and often comes with a vibrator hose (Needle/Flexshaft) of a length suitable for casting needs. Features: It helps in producing a smooth, uniform, and void-free concrete surface. Size: The package dimensions shown are (15x380x515) mm.