Premium Quality: Made of high quality aluminum alloy, which is rust-proof, corrosion-resistant, durable. Different sculptures: includes 9 different to meet the needs of different needs. Multiroputive: widely used for engraving, milling, grinding, drawing, cutting, polishing, removing drilling. Application: Perfect for working in various materials, such as wood, walnut, olive, jade more. Portable engraving pen: light weight, easy to carry, you can hold a pen, ergonomic design. description: Voltage: 3.6V Power: 35W Spin speed: 15000RPM Collet size: 0.5-3.2mm Engraving pen: 200*25mm black color Material: Aluminum Alloy Battery: 18650 Battery (not included) List of packages: 1pc*engraving pen 9PCS*Sculpture 1 PC * Charger (battery box not included) Note: Please allow 1-3mm differences due to manual measurement, for your understanding! Due to difference between different monitors, please understand that photo may not reflect actual color of the item.