57 mm tamper base knock convex
SKU: 23910411029

57 mm tamper base knock convex

Sale price$17.84 Regular price$19.82
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Description

57 mm tamper base knock convexJoeFrex 57 mm Tamper Base KNOCK CONVEX All KNOCK CONVEX bottom parts have a slightly convex pressing surface to compress the coffee grounds. Why the name Knock? After pressing the coffee grounds for the first time, lightly tapping on the side of the filter holder to dislodge any remaining grounds. Subsequently, it can be pressed again. To avoid using the base of the tamper or the wooden handle for this light tap on the filter holder, risking damage to

JoeFrex - 57 mm Tamper Base KNOCK-CONVEX

All KNOCK CONVEX bottom parts have a slightly convex pressing surface to compress the coffee grounds.

Why the name Knock?

After pressing the coffee grounds for the first time, lightly tapping on the side of the filter holder to dislodge any remaining grounds. Subsequently, it can be pressed again. To avoid using the base of the tamper or the wooden handle for this light tap on the filter holder, risking damage to both the tamper and the filter holder arm, you can now tap with the integrated silicone ring in the base.

Why the name CONVEX?

Normally, the surface of the coffee grounds pressed into the filter holder doesn't play a significant role; whether it's flat or concave, there's enough space between the coffee surface and the dispensing group so that the water can be evenly distributed over the coffee grounds and pass through them evenly. However, if a flat filter is used in the arm, or if much more than 7g (for a one-cup filter) or 14g (for a two-cup filter) is used, the space between the coffee grounds and the dispensing group may be too small for optimal water distribution. For this purpose, the Convex Tamper Base can be used, as it leaves a cavity in the middle of the pressed coffee, for better water distribution.

The dimensions of the tamper to be used vary depending on the manufacturer. Below is a list of manufacturers and their required dimensions for tampers:

- Delonghi BAR Tamper: 51mm
- Dalla Corte Tamper: 54mm
- ECM Tamper: 58mm
- Elektra Micro Casa S1 Tamper: 49mm
- Elektra Tamper: 58mm
- Faema Tamper: 58mm
- Fiorenzato Tamper: 58mm
- Francis! Francis! X1 Tamper: 56mm
- Gaggia Tamper: 58mm
- Grimac Tamper: 58mm
- Isomac Tamper: 58mm
- IZZO Lever Tamper: 53mm
- IZZO Tamper: 58mm
- Krups Tamper: 48/49mm
- La Cimbali Tamper: 58mm
- La Marzocco Tamper: 58mm
- La Pavoni Club Combo / Duetto Tamper: 58mm
- La Pavoni Europiccola Tamper: 48/49mm
- La Pavoni Manual Lever for Domestic Use (from 1999 onwards) Tamper: 51mm
- La Pavoni Manual Lever for Domestic Use (up to 1999) Tamper: 48/49mm
- La Pavoni Lusso Tamper: 53mm
- La Pavoni Millennium Tamper: 51mm
- La Pavoni Professional Tamper: 51mm
- La Pavoni Pub Tamper: 58mm
- La Scala Tamper: 58mm
- La Spaziale Tamper: 53mm
- Nuova Simonelli Tamper: 58mm
- Quickmill: 58mm
- Rancilio Tamper: 58mm
- Reneka Tamper: 57mm
- Saeco Tamper: 53mm or 51mm
- San Marco Tamper: 54.4mm or 53mm
- Vibiemme Tamper: 58mm
- Wega Tamper: 58mm

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SKU: 23910411029

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Laurens springerslng
Los Angeles, US
★★★★★ 5
Great thick squeaky ball
Color: Large Set of 2
These are good thick rubbery squeaky balls. My boy loves them! He's 75lbs. Strong chewer. I hav hard time squeezing to squeak, but he doesn't... He loves it!!!
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Reviewed in the United States on March 24, 2026
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g a ross
Houston, US
★★★★★ 5
Squeaky ball
Color: Large Set of 4
Perfect squeaky ball. Dogs love them. I love that they're durable and their thickness aids their durability. My Great Dane will play alone for hours with a ball.
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Reviewed in the United States on June 20, 2025
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Ricky Bobby
San Leandro, US
★★★★★ 5
Fun
Color: Interactive Dog Ball
Fun! Second purchase. Solid and rugged for 22 lb dog. He loves it.
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Reviewed in the United States on December 21, 2025
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DDT
Waukegan, US
★★★★★ 5
Great fun for our dogs!
Style: Original
My dogs can’t get enough of this very noisy ball. We have one outside and one in their playroom. It is very noisy. It is very hard. So, I’d say a room with fine furniture is not the place for it. Ours bang it around pretty good. Our boxer did split one, biting it. But, she’s a serious chewer! Our other dog carries it around sometimes but hasn’t been able to damage it yet. So, I’d say for most chewers it’s going to last a long time. It’s a great toy but in most households I’d say basement or outside. Again, it’s hard and did ding a few baseboards.
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Reviewed in the United States on March 27, 2026
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Luna Cherry
Fort Morgan, US
★★★★★ 5
Superb!
Style: Original
My dog absolutely loves this ball. It's too big for him to fit all the way in his mouth, so it's held up pretty well and still makes the sounds.
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Reviewed in the United States on May 31, 2026

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