2UUL DA81 Electric Rechargeable Polishing Grinding Pen With Various Grinding Heads for Mobile Phone OCA Glue Clean IC Chip CPU Drilling Maintenance Adjustable Forward and Reverse Rotation. Feature: 1. Solve the problem of traditional grinding pen shake , no shake rotation at high speed, and safer grinding. 2.Long gourd appearance design is more comfortable to hold. 3. Configure 5 different specifications, suitable for repair chip IC grinding, cutting motherboard, bracket,grinding border, etc. 4. 3 Speed adjustment to meet different operation requirements. 5. USB connection, easier to use. 6. Rechargeable. Notice: Product list not include battery, clients need buy battery at local,( battery is dangerous product, can't ship)