The most important thing to choose an Allen wrench is to choose the right material. Carbon steel and chromium-vanadium steel are common in the market. It is suggested to choose chrome vanadium steel hexagon wrench, which has long service life and is not easy to wear, and the wear resistance of carbon steel is slightly poor.
S2 is the best material, followed by 8660, but CR-V has the highest cost performance, and the prices of the first two materials are relatively high.
Specifications also need to be complete, it is best to buy a set and use it easily.
Hexagons such as Shida, Bart, Cafwell and edin dzeko are basically CR-V, and Cafwell has a set of hexagons, which is very convenient to use.