Allen wrench, hex key, allen wrench set, L shape wrench, Z shape wrench„ hex wrench, allen wrench manufacturer, alan wrench, hex key set,Allen Wrench, A kind of hand tools for screws and hex bolt, Have lot of name. Alias allen key, alan wrench, Hex wrench etc. Normally is L shape so it name L shape wrench too. Z shape wrench is accept. The ended can be hex, hex ball ended, TORX head (TORX wrench), Phillips head etc. Made by more material,S2 steel, CR-v steel, 45# steel etc, That’s why people feel that some times the same allen wrench price is very different. Actually for lot famous brand such as Dewalt, EIGHT etc material are made by S2 steel, Hardness HRC 59, Same for our ZHIDA ® brand’s quality, Some famous brand are we OEM.