Features: Brand new and high quality Small size and great function, suitable for pneumatic wrench, electric wrench, sliding bar and ratchet wrench. 4-12mm to meet the daily maintenance needs. The concave four corners make the wrench easier to insert High hardness hexagon head and chamfer design improve work efficiency. It can be firmly fixed with the bolt of the leather rings. The basic characteristics of high strength molybdenum steel are high strength, high hardness, wear resistance and high temperature resistance. Specifications: Material:Chrome Molybdenum Steel Bits:H4-H12 Package Includes: 8x Socket Adapter note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.