Engraving pen is designed for engraving or grinding on glass, metal, wood, stones, plastic, ceramics, and other materials. It can also be used for polishing nails or other items. Adjustable Speed Engraving: Variable speed control from 3,000 to 20,000 RPM. Lower speeds are ideal for metal and wood, while higher speeds work best for glass and ceramic. Choose the appropriate speed for efficient and safe operation. EASY TO USE: Simply turn on the engraver pen and adjust the speed using the slide switch. Hold it like a pen for precise control over the engraving or drawing path. 52 Accessories and Scriber Included: The DIY tool kit includes a variety of accessories suitable for engraving, carving, sanding, polishing (including nail polishing), and drilling. Color: Black Material: Metal AC Input: 100-240V DC Output: 9V / 1000mA No-load Speed: 3,000-20,000 RPM Usage: This scriber pen is suitable for marking, drawing, and etching. This jewelry tool set is ideal for engraving, drilling, grinding, and polishing. Plug Type: US Plug, compatible with Canada, India, Japan, Mexico, Thailand, Taiwan, the United States, the Philippines, and other countries using US standard outlets. Packing List: 1 x Carving tool 2 packs (6 x Polishing heads and 6 x Sanding rings) (Shaft diameter: 2.35mm, Bore diameter: 6.35mm) 30 x Different bits (10 pointed bits, 5 round bits, 4 shaped bits, 11 flat bits) 16 x Templates (8 pattern templates, 8 letter/number templates) 1 x Adapter 1 x Sculpting pen 1 x User manual Note: The package includes only the items listed above. Other items are not included. Note: Lighting and display differences may cause slight variations in the color of the item shown in the picture compared to the actual product. Measurement may vary by +/- 1-3cm.