Thank you for coming to our store BuySphere. Our products are shipped from overseas warehouses and can be shipped within 24 hours, with an estimated delivery time of 5-7 days. If you have any questions, please feel free to contact us at any time! Details External Carbon Brush Port: It makes carbon brush replacement more convenient and efficient. Visible Headshell: It is convenient for you to observe the working condition of the saw blade at any time. Heat Dissipation Holes: They ensure timely heat dissipation, avoiding damage to this product due to high temperatures. Application This product can be applied to concrete grooving, floor grooving, red brick grooving, cutting off rebar, marble grooving, and so on. It is widely used on construction sites, home decoration, road renovation, and cement factories. How to Install Saw Blades 1. Secure the spindle with a spanner and tighten it by turning the hexagonal spanner counterclockwise. 2. Put in the platen. 3. Put in the saw blade, then the platen, and so on. 4. Put the saw blade in place and cover the platen screws. 5. Tighten the screws with a spanner. 6. Saw blade installation is complete. Specifications Style: Modern Color: Green, Black, Silver Material: Plastic, Aluminum, Copper, Iron Surface Treatment: Spraying Painting Plug Standard: EU Standard Mount Type: Handheld Assembly Required: Yes Power Source: Corded Electric Voltage: 220V, 50HZ Load Power: 4000W No-load Speed: 6500RPM Grooving Angle: 360° Saw Blade Diameter: 12.1cm/ 4.76 in Adjustable Grooving Depth: 0-3.7cm/ 0-1.45 in Adjustable Grooving Width: 0-3.3cm/0-1.3 in Length of Water Pipe: 4m/ 13.12 ft Power Cord Length: 3 m/ 9.84 ft, 1.5m/4.92 ft (Water Pump) Product Length: 48cm/18.89 in Handle Width: 4cm/ 1.57 in Head Shell Length: 16cm/ 6.3 in Toolbox Size: 55*18*29cm/21.65*7.08*11.42in Water Pump Max. Flow Rate: 4L/0.88gal/ min Water Pump Rated Power: 30W Water Pump DC Input: 12V 2A Water Pump Max. Head: 10m/32.81 ft Package Included 1* Grooving Machine 1* Toolbox 5* Saw Blades 1* Water Pump 1* Water Pipe 1* English Manual Other Accessories for Assembly   Notes 1.Please read the instruction manual carefully before use and pay attention to the safety matters therein. 2.Please note that when using a vacuum cleaner (not included), the front protective cover should be fully pressed against the wall/floor when the base plate is set to the bottom position. 3.Please note that in order to prolong the service life, please check the wear of carbon brushes regularly. When the spark is large, the carbon brushes need to be replaced promptly. 4.Please note that when cleaning the cutting head, water should be avoided from entering the machine body through the vent, which may affect the service life of the machine. 5.Please note that when the rotating speed of the machine body slows down during use, do not use brute force to operate it hard to avoid overloading and burning the machine, first lift the machine and idle it for 5-30 seconds.