Feature: 1. This wireless engraving pen is made from quality ABS and brass material, which is durable for long service life. 2. The electric grinding pen is suitable for punching, engraving, painting, marking, trimming, and polishing. 3. This tool can be applicable to stainless steel, ceramics, glass, plastic, wood, animal horns, acrylic boards, circuit boards. 4. Adopting a low‑voltage design, with all brass strong motor, and is equipped with a variety of grinding and drilling accessories. 5. With low price and high cost performance. It is the best choice for users such as DIY enthusiasts and jewelry processing lines. Specification: Item Type: Engraving Pen Material: ABS + Brass Model: P500-19 Voltage: DC5V (USB) Power Supply: 2000mAh Lithium Battery (Shipped With Built-In Battery). Package List: 1 x Engraving Pen5 x Accessories5 x Chuck5 x Drill2 x Disc1 x USB1 x Plastic Box Note: 1. Keep your work area 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 is not more than 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.Shipped with built‑in battery