Features: Wide Compatibility Design : This hexagonal shank drill Chucks is made from aluminum alloy and carbon steel, suitable for various power tools. Perfect for both home projects and professional repair work, solves the problem of mismatched tool interfaces. Quick Install Structure : Not need additional tool for fast installation, significantly improving efficiency. Ideal for users who frequently change drill bits, saving valuable time during urgent repairs or creative projects. Wear Resistant : The combination of aluminum alloy and carbon steel ensures excellent durability and corrosions resistance, making it suitable for long term use in high intensity tasks like woodworking and metal processing. Precisions Operations Experience : The precisions engineered clamping systems provides a secure grip to prevent slipping, enhancing work accuracy. Perfect for detailed tasks such as model making and jewelry crafting where precisions is important. Portable & Compact Design : Its small size and lightweight make it easy to carry, ideal for mobile work whether at home or outdoors. A great solution for hobbyists and professional. Specifications: Component: Aluminum Alloy,Carbon Steel Shank:6.35mm (1/4'') Hexagonal Clamp Ranges:0.8-8mm,0.3-6.5mm,0.3-6.5mm,0.3-3.4mm,0.3-3.4mm Package Includes: 1Piece Keyless Drill Chucks note: Please allow 1-2cm errors due to manual measurement. Due to difference between different monitors, the picture may not reflect the item actual color.