Ohio Blue Tips have not been made for quite a few years now. As others have said, the Diamonds have deteriotated in quality. The heads are smaller, the matchstick itself is thinner and shorter too.
Find some Penley brand strike anywhere matches, much better than the Diamond brand and they have a stronger matchstick too.
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No, I am not Bear Grylls, but I stayed at a Holiday Inn Express last night and Bear was there too!