Features: * brand new and high quality *Equipped with chuck key to adjust the chuck to proper tightness. *Allows hex drive power tools to use conventional drill bits. *High strength and hardness. *Wear resistant and anti-oxidative. *Waterproof and anti-corrosion. *Easy to use. *Durable in use. *Applicable for drill machine, electric drill, etc. Specification: *Material: Metal *Size: as picture shown *Clamp Range: 1.5-13mm *Hole Diameter: 12.7mm *Quantity: 5Pcs Package Contents: 5pcs x Drill Chuck Set Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data. Made of high quality material, durable and practical to use. Please check the size, type and shape of the product picture before buying to ensure that the product is suitable If you have any questions, please feel free to contact us, we will solve it for you immediately. Whether you have a positive or a wrong view of the product, we would love to see your comments During the return window period, every customer can enjoy the return or replacement service for damaged/quality problems