Features: A wrench with 9/10 specifications: convenient and labor-saving, easy to handle for household use, mechanical engineerings, suitable for various scenarios, car, bicycles, and various mechanical maintenance. Surfaces atomization treatments: Surfaces atomization treatments also increases the strength of oxidation resistance. Both ends can be used: both ends of the flat headed hexagonal socket can be used, and the chamfer makes it difficult to get stuck when inserting things into the hole, making it convenient to use. Chromium vanadium steel material with high torque: The wrench is made from chromium vanadium steel material, which is sturdy with surfaces atomization treatments. PVC storage bag: The cloth bag packaging is stable, protecting the wrench from damage and fallingoff. Specifications: Material:Chrome Vanadium Type:9Pcs/Set,10Pcs/Set 9Pcs Set:3/4/5/6/8/10/12/14/17mm 10Pcs Set:3/4/5/6/8/10/12/14/17/19mm Length:Approx.97mm,110mm,120mm,138mm,155mm,178mm,200mm,220mm,255mm Package Includes: 9Pcs or 10Pcs Hex Keys Set note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.