Material High Carbon Steel Head style C Shaped Operation mode Mechanical About this item [Magic Self-adjust&amp ;Easy to Use] The grippers spanners are adjustable, and you don't need spend too much time adjusting the size of gripper if you need remove nuts with different sizes&shapes, and you can operate it by one hand, so it can help save your time and energy. [3 Different Grippers for Various Needs] There're 2pcs auto-ratcheting wrenches with 3 grippers, and these universal grippers are suitable for nuts or bolts whose diameters are from 9mm to 32mm . And they can also be used for various shapes, like square, hexagonal, triangle and so on. [Non-Slip Handle&Portable Size] With ergonomic design, the handles of this TPR universal spanners are comfortable to hold, and have a long service life. Owing to the small volume, it's convenient for you to carry the quick snap wrench set anywhere you want. [High Hardness&Durability] Made of high carbon steel, these pipe monkey spanners have high toughness&hardness and good grip. With the overall heat treatment&forging process, the torque of this crescent self-adjustable wrench spanner set is great. With self locking function, it's not easy to slip when you use these grippers. [Wide Application] This gear-wrench set can work for nuts, bolts, pipes, taps, valves, woodworking, plumbing, carpentry , machinery and gardens, etc. And these universal wrenches are also perfect for repair or replacement of kitchen, bathroom, carpentry or mechanic, car, auto, motorcycle, bike.