Brass Chuck : Equipped with a custom brass chuck, this mini electric engraving pen ensures minimal deviation while holding the grinding head. It locks the grinding head's position precisely, allowing for accurate engraving and grinding even during high-speed operations. Powerful 10W Motor: This 3 Gear Polishing Grinding Pen comes with a 10W powerful motor, offering stable and substantial power output. The ergonomic design balances comfort and efficiency, making operations smoother and less fatiguing. Sturdy Structure & Tight Engagement: The micro electric engraving machine features an integrated, robust body that securely fits a 2.35mm standard handle diameter grinding head. Its high-strength chuck prevents any loosening or falling off, accommodating various standard grinding heads. Ergonomic Comfortable Grip: Designed to fit the curve of the palm, the engraving and grinding machine provides a comfortable grip and smooth feel, reducing fatigue during prolonged use. It supports various operations like engraving, grinding, and polishing. Versatile Applications: Ideal for fine engraving on sports goods, grinding charger shells, and detailed carving on exquisite jewelry. The Mini Electric Engraving Pen meets both everyday crafting and professional processing needs with ease., Weight: 104.97 pounds, Manufacturer: IJSDNVJNDX