- 30-Piece Long and Short Hex Key Set: This comprehensive set includes 15 long hex keys in sizes ranging from 0.028 to 0.4 inches and 15 short hex keys from 0.7 to 10 mm, ensuring you have the right tool for any application. - Precision Engineering: Each hex key is precisely sized with chamfered, straight ends, allowing for smooth insertion into fasteners. This design minimizes wear and tear, extending the life of both the tool and the fasteners. - Durable Black Finish: The black surface treatment protects against wear and chipping, ensuring that the keys maintain their integrity even under heavy use. - Convenient Storage: The set comes with a sturdy case for easy organization and transport, making it ideal for both professional and personal use. - Practical Applications: Perfect for automotive repairs, furniture assembly, or machinery maintenance, this hex key set is versatile enough for any DIY project. Whether you are a professional mechanic or a weekend warrior, this set will meet your needs effectively. - Compatibility: Designed to fit a wide range of fasteners, these hex keys are compatible with various applications, providing a reliable solution for tightening and loosening screws. - High Performance: Engineered for durability and precision, this hex key set ensures reliable performance, making it a must-have addition to your tool collection.