Material High Carbon Steel Head style C Shaped Operation mode Mechanical About this item [Magic Self-adjustEasy 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 sizesshapes, 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 HandlePortable 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 HardnessDurability] Made of high carbon steel, these pipe monkey spanners have high toughnesshardness and good grip. With the overall heat treatmentforging 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 wrenchs are also perfect for repair or replacement of kitchen, bathroom, carpentry or mechanic, car, auto, motorcycle, bike.