Features: The adapter is designing for versatilities, allowing you to easily convert drill bit type and enhances your work efficiency across various drilling tasks. Crafted from high strength 45# steel, this adapter boasts excellent wear resistance and corrosion protections, ensuring long lastings and reliable performances in demanding environment. For professional builders, renovations experts, and DIYer enthusiasts, this adapter caters to those who require adaptable tool for various projects. Perfect for home improvement, construction engineering, and repair operations, it meets the needs of different drilling scenario with ease and precise. With its user friendly installation and robusts designs, the adapter is a essential addition to any toolkit, providing seamlessly compatibility with earth drills, impact drills, and hammer drills. Specifications: Component:45# Steel Size:Approx.40x60x10x15mm/1.57x2.36x0.39x0.59inch Package Includes: 4pcs/set Drill Holder Converter note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual colorings of the item. Thanks for your understandings.