6.35 mm to 4 mm screwdriver bit adapter enables seamless conversion between different bits, boosting efficiency and versatility in your projects. - Function and compatibility: Converts between 6.35 mm (1/4 inch) shanks and 4 mm bit interfaces to fit a wide range of standard screwdriver bits. - Lightweight design: Lightweight construction for easy transport and storage, making it a practical addition to any portable toolbox. - Ideal users and performance: Ideal for hobbyists, professional repair technicians and engineers who need a reliable tool for frequent use to ensure precision and ease on every task. - Applications: Suitable for home maintenance, furniture assembly, auto repairs and other technical projects. A versatile component for any multifunctional tool collection. Use scenarios - Home maintenance and furniture assembly - Auto repairs and electronics installation - On-site technical projects and professional repair work