Material: Made from iron material, this chuck key wrench offers sturdy durability and a comfortable grip. The sturdy materials ensure long-lasting performance even under frequent use in demanding environments. Portable: Measuring 15cm in length, this quick ratchet wrench is easy to carry around in your toolbox or pocket. Its lightweight design does not compromise on strength or functionality. Design: Featuring a quick ratchet design, this wrench allows for easy and efficient adjustment of drill chucks. The design significantly reduces the effort required to tighten or loosen chucks, making your work faster and more convenient. Versatile: This ratchet wrench is designed to fit a wide range of drill chucks, including 10mm, 13mm, and 16mm sizes. Its adaptable nature makes it suitable for various drilling tasks, ensuring compatibility with multiple tools. Package Includes: 1 piece ratchet wrench and 3 pieces drill chucks (10mm, 13mm, 16mm). Specification: Material: Iron. Size: 15cm / 5.91 inches. Note: Please allow slight differences of 1-2cm / 0.39-0.79 inches due to manual measurement.