ITEM NAME:Aluminum Quick Change Keyless Drill Bit Chuck 0.3-6.5mm Shank Adapter Converter Product Description Description: Features: 1. Three-clamp design, aluminum alloy material, convenient and convenient, strong hardness. 2. Removable screws, more versatile, not easy to rust, rust and oil, corrosion resistant. Specifications: Color: Silver Material: aluminum alloy Length: 74mm/2.91'' Connector: 5mm/0.19'' Clamping range: 0.3-6.5mm Notes: Please allow 1-3mm differs due to manual measurement. Due to the different display and different light, the picture may not show the actual color of the item. Thanks for your understanding. Included: 1 X Keyless Drill Bit Chuck.Included: 1 X Keyless Drill Bit Chuck. Three-clamp design, aluminum alloy material, convenient and convenient, strong hardness. Material: aluminum alloy. Clamping range: 0.3-6.5mm. Due to the different display and different light, the picture may not show the actual color of the item.