Features: Crafted from carbon steel, ensuring exceptional durability for your drilling needs. These adapters provide secure connection and quick changes, making them highly for various drill bit and power tool. Ideal for professional technicians, enthusiasts, and household users who require reliable and efficient tool solution for diverse tasks. Perfect for mechanical repairs, electronic assembly, and everyday home maintenance, this adapter set enhances productivity and ensures operations. Lightweight, the set fit easily into toolboxes or bags, offering portability without compromising on performances, making it essential addition to any toolkit. Specifications: Component:Stainless Steel Length:65.5mm/65mm/77.5mm/72mm Package Includes: 4Pcs Wrenches Adapter 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.