【High-quality material】 Made with high-quality material featuring a Japanese motor. Efficient and durable. 【Fast & precise operation】 12,000 RPM chuck speed; Pen tip diameter: 2.35 mm. Despite its small size, it delivers great power. However, the slip-free rotating tool has low torque and is suitable only for light grinding, engraving etc. 【Electric】 Powered by 4 x AA batteries (not included). Easy to handle & strong abrasion resistance. 【Broad application range】 Applications include engraving tools, sports items, toys, phone chargers, and delicate personalization of jewelry, watches, and glassware (perfect gift for birthdays, holidays, Christmas and other special occasions) 【Quality guarantee】 If you have any questions, please contact us immediately and we will respond within 24 hours. If your products arrive damaged, we will send you a new one or provide an immediate full refund. If you are not satisfied in any way, our products are supported by a 100% money-back guarantee. Electric engraving pen with diamond tip for Bijouxv Keramik Plast Features: Size: Length: 16 * 2 cm Product weight: 102 g Power supply: 4 AA batteries (not included) Chuck speed: 12,000RPM Material: Artificial diamond and plastic Packaging includes 1 * engraving pen