•【Quick-Release Auto-Centering Design】Innovative quick-release mechanism with automatic coaxial alignment ensures perfect concentricity when switching between different grinding heads for stable and efficient operation. •【Wireless Operation Freedom】Cordless design eliminates cable restrictions, providing unlimited mobility and flexibility during precision repair work on electronic devices. •【7 Professional Grinding Heads Included】Complete set of specialized grinding heads including K-pin, D-pin, cutting heads, and polishing heads for comprehensive electronic repair applications. •【Intelligent Multi-Speed Control】Variable speed adjustment with LED indicator system provides precise control over rotation speed, with overload protection that automatically stops the motor when excessive resistance is detected. •【Ergonomic Anti-Roll Design】Square cross-section with rounded edges prevents rolling on work surfaces while providing comfortable grip, enhanced by frosted anti-slip surface for precise control. •【High-Performance Charging System】280mAh battery with 10C fast charging capability (peak current 2.8A) ensures extended operation time and quick turnaround between uses. Specifications: •Battery Capacity: 280mAh •Charging Protocol: 10C fast charging (peak current 2.8A) •Charging Port: Type-C Package included: •1 x Wireless Electric Sanding Pen •7 x Sanding Heads