PREMIUM MATERIAL - Made from high-quality heat-treated S2 steel, this SAE allen wrench set offers superior hardness, durability, and long-lasting performance. The black oxide finish ensures anti-corrosion and rust protection. MULTIPLE SIZES - ELEAD 15-piece hex key set includes a wide range of SAE sizes from 3/64 to 3/8 Inch, with each wrench clearly labeled for easy size identification. Perfect for various tasks and ensuring you always have the right tool. EXTRA TORQUE - Boost leverage and power with this extension bar, making tough fasteners easier to loosen or tighten. The knurled grip ensures a secure hold, while the extended length reaches deep, hard-to-access spots effortlessly. LONG ARM BALL END - Featuring a long arm and ball-end design, The chamfered edges and 25-degree angled entry make it perfect for accessing tight, difficult spaces, offering added efficiency and convenience. VERSATILE USAGE - Whether for auto repairs, DIY projects, or household appliance maintenance, this allen wrench key set is a versatile tool that helps you tighten or loosen bolts and nuts in spaces that traditional hex keys can’t reach. Unlock superior performance with the ELEAD 15-Piece Hex Key SAE Allen Wrench Set. Crafted from high-quality heat-treated S2 steel, this set delivers unbeatable durability and strength. Featuring a full range of SAE sizes (3/64" to 3/8"), each wrench is clearly labeled for quick size selection. The long arm ball-end design and extension bar provide extra torque and reach, making it the ideal choice for auto repairs, DIY projects, and tight-space tasks.