Feature:1. SPEED RANGE: The stepless variable speed range is 050000rpm, suitable for polishing, cutting, milling, trimming, grinding, mold casting, etc.2. ADVANTAGES: This electric grinding machine has the characteristics of high torsion, strong power, low vibration, low noise, and high efficiency.3. MULTIPLE FUNCTION: This rotary grinder supports CW CCW function, with emergency brake setting, manual or pedal control mode, pedal speed regulation.4. BRUSHLESS HANDLE: Adopting brushless handle, the electric brush is removed, greatly reducing the interference of electric sparks on the equipment.5. WIDE APPLICATION: This brushless electric grinder is suitable for laboratory, jadestone grinding, DIY handicrafts, copper porcelain drilling and polishing, etc.Specification:Item Type: Electric GrinderModel: 303-331Maximum Torsion: 6.8-7.8NCMOutput: DC0-36VSpeed Control: 0-50000rpmMaximum Current: 4ATransmission Mode: Stepless Variable Speed (CW and CCW)Chuck Maximum Speed: 50K RPMApplication: Laboratory, denture, jadestone, grinding tool processing, handicrafts, decoration carving and polishing, copper porcelain drilling and polishing processes, etc.Features: 1. Durable, RPM display2. Circuit protection system3. Automatic overload protection4. Manual and Pedal Control Mode5. Foot speed control6. Low speed and high torsion mode7. Rigid and flexible start function.Package List:1 x Controller1 x Handle1 x Speed Control Pedal2 x Handle Tools1 x Power Cord1 x User Manual1 x Handle Bracket