Features: Efficient and Reliable: The new three-claw ratchet chuck is more tightly and steadily clamped making the work more reliable efficient and safer. Fast Replacement: Hand-held three-jaw chucks can be quickly clamped and adjusted with a single hand easily changing from fastening to drilling. Wide Compatibility: Compatible with a variety of drill bits with quick connection and switching to meet all your drilling tasks. Strong and Durable: Constructed with all metal it is wear-resistant and durable.Resistant to wear and protection oxidative Waterproof and anti-corrosion. Satisfaction Guarantee: We strive to provide each customer with the highest standard of customer service to ensure you have a pleasant shopping experience. If you have any issues inquiries or need assistance please feel free to contact us directly. Specification: Clamping Range: 1.5-13mm Aperture: 12.7mm Product Weight: About 295g Notes: 1. Due to the lighting effects and shooting angles there is a color difference in the product please understand. 2. Due to manual measurement there is a tolerance in the product size. includes: 1 *3mm Manual Chuck 1 *Electric Wrench Adapter 1 *Hexagonal Extension 1 *Round Handle Extension 1 *Wrench