Before I knew it, 12 mm socket was lost ... · · ·. I do not remember when and when I lost it. Perhaps it seems like it was when I moved the 80 grain dryer, reassembled, but eventually I could not find it .... In relatively delicate agricultural machinery, this size is used quite often, so we decided not to buy never without thinking, forever. It is only a few hundred yen, but it is frustrating for some reason. By the way, I do not know the robustness of this product, but in the first place any machine that uses bolts and nuts of about 12 mm to tighten / loosen the part, so much that requires a large torque, so expensive "quenching I do not care about specifications, so I think that this product is fine. Aside from experiences, what I lost is somehow "someone coming out" after I bought a new one.