content: Got these bits a couple of weeks ago to replace a 20+ year old Craftsman set. The first thing I noticed was the heft of the assortment; same number of bits as the Craftsman, but considerably heavier. Have mainly used a couple of the larger ones on a cast iron grill; they chewed through like it was pine. Have used some of the smaller bits to drill out rusted bolts. You only need to watch the metal filings pile up to know they're doing their job. Haven't used any on wood; seems like overkill and my older ones do fine for those. I only wish the storage box had a more positive lock mechanism. But I do like its bright size markings (sure beats stamped metal, which I can never read in weak light). All in all, I'm very pleased, and the price was GREAT!.