Features: Experience drill bit switching with our Drill Chuck Adapter, accessory that effortlessly converts B10 to B12/B12 to B16 size for your diverses drilling needs. Crafted from carbon steel, this adapter boasts durability engineering, ensuring a secure and stable connection. Suitable for enthusiasts, woodworkers, and metalworkers, this chuck adapter is professional and hobbyists who frequently alternate between different drill bit size. Whether you're tackling home repairs, renovations, creative crafting, or industrial machining, enhances efficiency and saves costs by broadening the compatibility of your existing drill bit Elevates your toolkit's functionality with our Drill Chuck Adapter, a practical solution for streamlining your projects and achieving result in any drilling application. Specifications: Component:Carbon Steel Type:B10 to B12/B12 to B16 Size:Approx.25.5x14.5x15.8mm/1x0.57x0.62inch Package Includes: 1 Set Conversion Sleeve note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.