High-Quality Materials: Manufactured from Hardened and Heat Treated Chrome Vanadium Steel,advanced mirror bright chrome finish,hardness, durable, anti-corrosion,rust resistance for your long time use. Flat and Ball End Design: The flat head has a larger force area and will have more torque. The ball head has a maximum entry angle of 25°, making Mriuuod hex key set easier to reach those hard-to-reach areas and facilitating adjustments at various angles. Magnetic Design: On the package of the metric allen wrenches set, there is a magnet, near which you can magnetize a hex key. The magnetic attraction, though not very strong, could help attract light screws or other small metal parts when needed. VISIBLE COLOR: Each allen key with heat treated & chrome plated also has a different highly visible color to make for easy distinction of different sizes. A textured slip resistant surface for an easy grip even with oily & dirty hands. 9 Pieces Allen Key Set: 9 PCS Metric Allen Key Set, Sizes: 1.5, 2, 2.5, 3, 4, 5, 6, 8, 10mm, It Comes with Foldable Storage Rack for Easy Storage of Tools. which can be widely used in Repair of furniture, cars, bicycles, toys and mechanical products etc.