Feature 1The 3jaw chuck design, ensures stable and firm clamping and is not easy to slip. 2Large clamping range, and the maximum 13MM drill bit can be clamped to meet various drilling needs. 3Thread design, easy installation, tail hole is 3/824UFN, the converted metric diameter is 9.525mm. 4Multipurpose, suitable for drilling, stainless steel, wall, porcelain, metal, wood, etc. 5Selftightening electric drill chuck, high hardness, durability and abrasion resistance.Item Type: Drill Conversion ChuckMaterial: IronClamping Range: 2-13mmWeight: Approx. 176g / 6.2ozChuck Size: Approx. 43x64mm / 1.7x2.5inScrew Size: Approx. 9.5x55mm / 0.4x2.2in .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Drill Conversion Chuck1 x ScrewNote1. Please allow 0‑1 inch error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.