Clamping RangeThe steel three-jaw chuck can accommodate accessories with a size of 0.4-3.2mm, and the adapter is made of alloy for super durability. The collet is small in size and light in weight, so it won't bring extra burden to your operation. Strong Gripping Force: The drill chuck adapter adopts torque thrust bearing unique, which is exquisitely designed, just tighten the chuck to achieve strong gripping force, and the clamping is stable. Easy to use: The drill chuck adapter without wrench makes charging power tools easier and safer. Simply plug in and hand-tighten your standard drill bit, reducing the time needed for your project. Easy Loading and Unloading: The three-jaw chuck converter can go from driving to drilling in seconds and also gives you the freedom to drill with one hand, perfect for working in tight spaces. Wide Range of Applications: These drill chucks have different specifications and can be fitted to most electric drills; they can be used in cars, garages, warehouses, offices, homes, etc. Specification: Material: Alloy Weight: 8g Colour: Black Overall length: 23.4mm Tooth width: 0.75mm tooth pitch Inner Diameter: 6.2mm Chuck Range: 0.4-3.2mm Package Included: 1 * Three Jaw Chuck< /p> Notes: 1. Due to the difference in the display and lighting effects, the actual color of the product may be slightly different from the color displayed in the picture. Thanks! 2. Since it is manual measurement, please allow 1-3cm measurement deviation.