Features 1、Adjustable 5‑level speed, with higher working efficiency to better meet your different kinds of needs. 2、Low‑voltage design, brass motor as the power unit, and with a variety of grinding and drilling accessories. 3、Equipped with an USB charging port, you can charge anytime, anywhere, more convenient and faster to use. 4、Work with a suitable grinding head drill pen for engraving, cleaning, polishing, cutting, peeling and polishing. 5、Come with exquisite appearance and high grade, sophisticated production brings you more convenience. Specification Item Type: Mini Grinder Set Material: ABS + Brass Model: 202 Color: Green Voltage: DC3.7V Battery: Built-in 2000mAh Lithium Battery Application: Engraving, cleaning, polishing, painting, cutting, polishing, etc. Package List 1 x Electric Grinder 3 x Drill Bits 1 x USB Cable 2 x Wool Pads 3 x Sand Roll 5 x Chucks 10 x Polishing Accessories 1 x Manual