Made of durable 18/8 stainless steel and accented by red acrylic plastic, RSVP's 49mm tamper fits perfectly with the ROK's unique portafilter. A consistent tamp is essential for excellent espresso and for that you'll need a tamper like the RSVP. An equally important factor is that you make sure you brew with high quality coffee. Gimme! Coffee's Colombia Popayan Tierradentro coffee is single origin and certified USDA organic, making it an ideal choice.
I previously purchased a tamper that looks like this one and returned it because it was not flat on the bottom. It had a rounded edge that did not tamp the coffee properly. I would hate to buy this one and find out it was the same one!
It is flat as advertised. It is an odd size and will fit the Rok well. If you have a differnet machine you made need another size. Most will have a round edge but not in a way to affect the way it tamps. You may want to read this - http://www.home-barista.com/espresso-machines/tamper-bottoms-flat-or-convex-t24.html
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