The Hazet 163-259/14 is a 14-piece socket bit set featuring a 3/8 inch (9.5 mm) square drive in a double hex design. This professional tool system is designed for precise mechanical work, emphasizing durability and user safety. The set utilizes the Safety-Insert-System, where all tools are impact-resistant and embedded in a two-component soft foam insert measuring 342 x 172 mm. This ensures immediate visual control of missing tools and secure storage during transport. The foam inserts can be easily cleaned under running water with simple brushing and drying. The set is compatible with all Hazet tool carts with drawers, and for tool carts 173, 179, and 180, additional plastic inserts 173-36/5 or soft foam inserts 163-522x40 and 163-522x50 are recommended for optimal organization. The complete set is delivered in a SmartCase L for convenient storage and transport. Each bit is designed for reliable performance, with the double hex design providing improved grip and torque transfer for demanding applications. The 3/8 inch drive size offers versatility for various mechanical tasks while maintaining compact tool dimensions. The Safety-Insert-System not only protects the tools from damage but also allows for immediate inventory control, making this set suitable for professional workshops and serious DIY enthusiasts who value organization and tool longevity. The foam material is specially formulated to protect tools from impacts while allowing for easy maintenance. This product represents Hazet's commitment to precision engineering and practical tool storage solutions for technical applications.