I've worked on semis, trailers and equipment for about ten years now. Excellent quality - heavy duty.
Is this set 6 point or 12 point sockets? It is a 6 point set where are these made? none Are these stamped in the metal? Yes. They have a machine mark stamped into each socket as well as lighter contrasting labeling painted on them for easier identification. Do these tools have warrenty? I'v had both long and short 17mm brake on me. IS there a place i can go to exchange or it has to be shipped back? yes they are lifetime warranty , Go to gpsockets.com for information about how to get sockets replaced under warranty. I haven't had to replace any so this is the best I can offer. Are these impact? Yes. Some of the best budget sockets I have ever used, even my co-workers bought grey pneumatic after seeing mine and using them!