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Title: Not 49mm
Review: This tamper is a good fair priced tamper. The only problem is that it is only 47.5mm. It may not seem like a lot, but a mm can make a huge difference in your espresso. Also it's not completely flat, its slightly rounded on the bottom and the edges are rounded. The problem with this is that when you tamp, the grounds go up the sides and overflow over the edge of the filter basket. I would not recommend buying this tamper unless your basket is 48mm.
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