Feature:1. Mini electric grinder set can be used for punching, engraving, painting, marking, trimming, polishing and other functions.2. Suitable for materials such as stainless steel, ceramics, glass, plastic wood animal corner acrylic board, circuit board thin staggered board, etc.3. Low-voltage design, copper motor as the power unit, and a variety of grinding and drilling accessories to make it a wide range of applications.4. Mini electric drill set has the advantages of reasonable structure, low price, high cost performance, etc. It is the best choice for users such as DIY hobby, jewelry processing assembly line, etc.5. 3Speed adjustable, 5000/10000/15000rpm onekey switch, flexible setting and adjustment of the speed according to the work content and the type of materials used.Specification:Item Type: Electric DrillMaterial: ABS + BrassModel: MRT22DCVoltage: DC5V (USB)Speed: 5000/10000/15000 (3 Gear)Power Supply: 2000mAh Lithium Battery.Package List:1 x Electric Drill1 x USB1 x User Manual2 x Wool Felt 1 x Saw Blade5 x Grinding Heads5 x Pole5 x Collet3 x Abrasive Paper3 x Drill Bits1 x Plastic BoxNote:1. Keep your work area clean and tidy2. Do not use it in an environment with explosive gas or dust3. Pay attention to the safety of electricity, do not use the tool in a humid environment or in the rain.4. Make sure that the fixing nut of the chuck has been tightened before starting the tool5. The continuous use time of this product does not exceed 15 minutes. Do not block the heat dissipation port during use. When the motor is stuck during operation, turn off the switch in time to avoid burning the motor.6. Shipped with builtin battery.