Concrete Grinder Set with Extension Rod and Optional Vacuum Cleaner What this tool does Fourhead, geardriven grinder designed for fast, consistent concrete surface preparation and finishing. Equipped with four industrial diamond grinding wheels to cover larger areas per pass and reduce the number of passes required. Variable speed and ergonomic extension system let you work upright and maintain control for longer jobs. Key benefits Faster coverage: Four 100 mm (4 inch) diamond discs driven by gear technology cover more area per pass than singlehead units, improving job speed on factory and warehouse floors. Powerful and controllable: Industrial allcopper motor, 3800W, with noload speed up to 6000 rpm and a 6speed adjustment knob for precise control from light polishing to aggressive grinding. Cleaner work environment: Detachable dust hood fits tight to walls at 90 degrees and reaches corners. Dualchannel dust outlet is compatible with industrial vacuum cleaners to reduce airborne dust during operation. Less physical strain: Includes four interlocking extension rods that extend up to 170 cm so operators can adjust the handle height and work upright to reduce fatigue. Ready to use: Package includes discs, sandpaper, adhesive discs, extension pole, and an optional vacuum cleaner for immediate job start. Main specifications Voltage: AC 110V220V Motor power: 3800W Noload speed: 06000 rpm Motor type: allcopper Speed control: 6speed gear adjustment Grinding discs: 4 x 100 mm (4 inch) Inner hole diameter: 0.9 cm Extension pole: up to 170 cm Packing weight: 12 kg Packing size: 56 x 29 x 38 cm Package contents 1 concrete grinder set 4 diamond discs 4 grinding discs 4 sheets of sandpaper 4 adhesive discs 1 extension pole 1 vacuum cleaner (optional) Practical applications Concrete floor preparation in factories and warehouses before sealing or coating. Surface leveling and removal of old paint, epoxy, or adhesive residues on industrial and commercial floors. Polishing and finishing of stone or marble floors where variable speed control is required. Why you would choose this unit Combines industrial power with useradjustable speed and reach so both heavyduty grinding and fine polishing are possible with one machine. Designed for compatibility with standard 100 mm discs and industrial vacuum systems for simplified maintenance and cleaner operation. Compact packed size and a complete accessory set make it suitable for contractors and maintenance teams who need a portable, performance grinder.