This set includes various sizes: 2 mm, 2.5 mm, 3 mm, 4 mm, 5 mm, 6 mm, 8 mm, and 10 mm, ensuring you have the right tool for every job. Each hex key is precision-engineered and features a chrome-vanadium shaft with a comfortable two-component handle for an ergonomic and secure grip. To enhance the precision of these tools, the tips are carefully coated with black oxide, optimizing tool tolerances to ensure the highest accuracy in your tasks. Our hex keys are designed to fit perfectly on screws and bolts, allowing you to feel confident in your work. The two-component handle provides a comfortable and secure grip, making each use a pleasure. You will keep reaching for these top-quality hex keys time and again.