Inexpensive hex wrench and strong! The steel is strong enough even though it flexes a little when torquing down a screew. Great for working on SAE standard screws mostly found from American RC brands (for example Team Associated).
I never before used hexagon wrench . i just used small allens and now that i tried the hex wrenches i will never go back. , i bought all the sizes and use them everyday. The particular one i use it to screw the Robinson racing pinions that uses the American 1/16. the quality is excellent and the price is as low it can get. i highly recommend them.