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

Shipping Notes
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Exchange/Return Notes
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  • Final sale items are not eligible for returns or exchanges.
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SKU: 23910411029

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Mary Kelleher
Whiting, US
★★★★★ 5
Durable
Color: bone, Size: 1 Count (Pack of 1)
Perfect chew toy for my cat that thinks it’s a dog
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 26, 2026
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Verified Purchase
sec682
Lowell, US
★★★★★ 4
Wears out more quickly than standard versions
Color: bone, Size: 1 Count (Pack of 1), Color: bone, Size: 1 Count (Pack of 1)
While my puppy loved this bone and it was a good starter toy, it didn't last long. Our lab puppy loves to chew - especially when we stuffed the ends on this bone. After about 1.5 months of moderate use, she ended up chewing off and swallowing a small chunk of this bone, which she thankfully passed without issue. The material of this bone is intentionally softer than other kong toys, so it breaks down easier, and you will need to inspect it for wear more frequently. We have since upgraded to the large super chewer version for her, and she still loves it.
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Reviewed in the United States on July 22, 2025
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Verified Purchase
J Kowlessar
Los Angeles, US
★★★★★ 5
Teething proof!
Color: bone, Size: 1 Count (Pack of 1)
My 9 month old mini dachshund loves this bone. Holds up impeccably. Great price. Thank you Kong!
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Reviewed in the United States on February 25, 2026
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LilFrog
Houston, US
★★★★★ 5
Nice
Color: bone, Size: 1 Count (Pack of 1)
Nice
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Reviewed in the United States on June 8, 2026
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Verified Purchase
JDuchess
New York, US
★★★★★ 5
Great for Puppies
Color: bone, Size: 1 Count (Pack of 1)
Yes, my puppy loves it.
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Reviewed in the United States on April 8, 2026

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