1. Four-gear torque switching, positive and negative rotation adjustment 2. There is a variety of grinding heads to choose from 3. Scope of application: IC polishing, board layer polishing, shielding cover cutting, jade carving 4. Pure copper motor, coaxial concentric, quick disassembly design 5. Ergonomic grip for easy and convenient use 6. Large capacity battery, Type-C fast charging, wireless use 7. Package includes: 1 x Polishing Pen 7 x Grinding Heads
