PREMIUM MATERIAL - Constructed from heat-treated chrome vanadium steel, this hex key set offers exceptional strength and durability. With a black-oxide finish, the allen wrenches sets resist rust and wear for long-lasting use. COMPLETE COVERAGE - This 41-piece set includes both SAE and Metric hex keys, ranging from 0.028 to 3/8 inch and 0.7 to 10 mm, as well as Torx keys from T9 to T50, covering all your fastening needs. POWERFUL TORQUE - Comes with a torque handle for added force during loading and unloading fasteners, increasing reach and enhancing torque performance. VERSATILE DESIGN - This allen key set provides extra leverage and reach, perfect for hard-to-access areas. The precision chamfered tips ensure a secure fit in any allen wrench set. ORGANIZED STORAGE - Comes in a sturdy black plastic case with clearly marked slots, keeping your hex key set neatly arranged. Quick size selection and easy organization make this allen key set convenient to carry and store. Engineered for strength and durability, the 41-Piece hex and torx key set is crafted from heat-treated chrome vanadium steel and features a rust-resistant black-oxide finish. It includes SAE (0.028"-3/8"), Metric (0.7mm-10mm), and Torx (T9-T50) sizes, covering all your fastening needs. The included torque handle ensures maximum torque with minimal effort. A convenient storage case keeps tools organized and accessible. Ideal for mechanics, DIY enthusiasts, and professionals.