Product name: Electric Grinding Drive Flexible Shaft Engraving Pen Product size: Length 108 cm / 42.12 inches Product color: As shown in the image Product material: Metal Product features: Small electric mill flexible shaft: This flexible shaft is compatible with small electric mills and can be used for fine engraving, grinding, and similar tasks, offering greater operational flexibility. High concentricity: The shaft provides high concentricity, ensuring stable and accurate performance for precise results. Electric mill drive flexible shaft engraving pen: Transfers rotational power from an electric mill to the flexible shaft, enabling more convenient and flexible operation. Compatible with variable speed electric rotary tools: Designed to work with electric rotary tools, expanding functionality and versatility for various applications. Multi-functional application: Suitable for engraving, grinding, polishing, and repair tasks, making it a practical accessory that enhances tool usability and offers additional operational options. Precautions: 1. Colors may vary slightly due to differences in monitor displays. 2. For sizing guidance, please refer to product specifications. Shipment includes: 1 x Electric Grinding Drive Flexible Shaft Engraving Pen