The JS550 5.5HP Portable Concrete Grinding Machine Gear Driven Grinder is a top-notch product offered by our factory. Designed with durability and efficiency in mind, this grinder is perfect for tackling tough concrete surfaces. The gear-driven mechanism ensures smooth operation and powerful performance. Its 5.5HP motor delivers ample power to grind and polish concrete with ease. Portable and easy to maneuver, this grinder is ideal for both small-scale industrial use and DIY projects. Trust in our factory's commitment to quality and order the JS550 for all your concrete grinding needs.