High-quality material: Our mini drill chuck is made of aluminum alloy, which is highly heat-treated, anti-corrosion, anti-rust, durable and not easy to damage. Fixed design: The micro drill is more fixed, has better rotational alignment, maintains stability and improves work efficiency. Easy to use: Just lock or unlock the drill bit, you can easily and quickly replace the rotary tool parts without changing the chuck. Easy to carry: The mini drill chuck is small in size and does not take up space. Easy to carry in pockets and toolboxes. Scope of application: Suitable for DremeI 4000, 400, 3000, 398, 395, 300, 285, 275, 200, 100, 8200, 800, 780, 770, 7700, 750. Description: 1. Ideal for auto repair shops, garages, warehouses, workshops, factories, offices and even at home. 2. 100% brand new and high quality. 3. Quick-change keyless chucks are compatible with a variety of accessories. Material: Aluminum Alloy Color: Black Package Includes: 2 x Keyless Collet Size: As shown Color: Black Quantity: 2 Pcs Note: 1. Due to manual measurement, please allow an error of 1-2mm. 2. Due to different lighting and screen settings, the color of the item may be slightly different from the picture.becomeveryrich