Two 15-piece SAE hex keys with long arms and one 15-piece metric hex key set with short arms. These sets are manufactured from chrome-vanadium steel in industrial quality for durability and reliable performance. Sizes included - 0.028", 0.035", 1/2", 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 3/16", 7/32", 1/4", 5/16" and 3/8" Key benefits - High strength material: chrome-vanadium steel delivers lasting hardness and resistance to wear. - Long arm sets provide greater leverage for easier turning and loosening. - Short arm metric set allows access to tight spaces where longer keys wont fit. - Clear size range covers a wide variety of standard fasteners, enhancing compatibility with common bolts and screws. What makes it stand out - Industrial quality construction for demanding use. - Includes both SAE long arm and metric short arm configurations to suit different applications and spaces. Use scenarios - Automotive maintenance and repair: reach and turn tight fasteners in engines or underbody components. - Bicycle servicing: adjust bolts in cramped frame areas and components. - Home and workshop projects: assemble furniture, repair machinery, or perform miscellaneous maintenance in confined spaces. Applications and compatibility - Suitable for automotive, bicycle, machinery, and general repair tasks. - Sized for typical hex bolt and nut interfaces encountered in professional and hobbyist work. - The combination of long and short arm configurations provides flexibility for leverage and access in various work environments.