Item Name: Electric Grinder Material: Plastic, Metal Features: Rechargeable, Long Life Span, Ergonomics Battery: 700MAH Charging Time: About 2 Hours Endurance Time: About 1 Hour Clamping Range: 1-3mm Three Speeds: 5000/10000/15000rpm/min Engraving Output Voltage: 3.6V Rated Input Power: 22W Specifications: With its pen-shaped design, this electric sander is very lightweight and provides a comfortable grip. It also has an efficient heat dissipation system to protect the motor for long-lasting durability. Featuring a 3-speed power adjustment design, this electric grinder can meet your needs for different operations, which can be used for grinding, polishing, carving, rust removal, cutting, drilling, etc. and is very practical. It is constructed of plastic and metal material. The length of this product is 20cm, the width is 6.2cm and the height is 4.5cm. It is suitable for jade carving, wood carving, chipboard, epoxy board, etc. Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Size Details: Length: 18cm Diameter: 3.5cm Package Includes: Style A: 1 x Electric Grinder 1 x USB Charging Cable 1 x Grinder Head or Style B: 1 x Electric Grinder 1 x USB Charging Cable 2 x rubber Wheel 5 x Grinder Head 8 x Grinder Ring or Style C: 1 x Electric Grinder 1 x USB Charging Cable 2 x Rubber Wheel 5 x Grinder Head 8 x Grinder Ring 1 x Storage Box