MaAnt D1 Smart Electric Polishing Pen For Phone LCD Screen Residue OCA Glue Adhesive Remover Cutter Shovel Clean Repair Tool. MaAnt D1 Smart Polishing Pen: 1. Speed 5000-10000-18000 three gears. 2. Adapt to the diameter of the grinding head 2.35mm. 3. The use time is more than 1 hour without load in the third gear. 4. Automatically turn off the light and power off when fully charged. Specification: Brand: MA-Ant Grinding head diameter: 2.35MM Product Name: Smart Electric Polishing Pen Power: 10W Product model: Antxin D-1 Speed: 5000-10000- 18000 three gears Battery voltage: 4.2V Antxin D1 Smart Polishing Pen