Although I did not order them from Amazon, I use this set for work. I felt that a single review commenting only on the country of origin does not do this product justice. I use these bits on drywall, wood, steel door frames, aluminum door frames, and all sorts of other metal objects. I've roasted many different brands and styles over the years and this set from Milwaukee stands above all others. If you want them to last even longer don't use this wood and drywall kit, buy cheap black oxide from other brands instead. Also consider using a good quality cutting oil when drilling metal larger than 3/16 inch diameter. Drill aluminum slowly. Even use clutch setting #1. you see metal shavings, you go fast or your drill bit is dull. I don't go much faster on steel. Heat is the enemy of all drills. Hence the suggestion to use a cutting fluid.