SKU: 68705659354

55 mm tamper base knock convex

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Description

55 mm tamper base knock convexJoeFrex 55 mm Tamper Base KNOCK CONVEX All the lower parts of KNOCK CONVEX have a slightly convex pressing surface to compress the coffee powder. Why the name Knock? After pressing the coffee powder for the first time, lightly tap on the side of the filter holder to dislodge any remaining powder on the sides. Then 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

JoeFrex - 55 mm Tamper Base KNOCK-CONVEX

All the lower parts of KNOCK CONVEX have a slightly convex pressing surface to compress the coffee powder.

Why the name Knock?

After pressing the coffee powder for the first time, lightly tap on the side of the filter holder to dislodge any remaining powder on the sides. Then 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 powder 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 dispensed from it can be evenly distributed over the coffee powder and pass through it uniformly. However, if a flat filter is used in the arm, or if much more than 7g (for a single cup filter) or 14g (for a double cup filter) is used, the space between the coffee powder and the dispensing group may be too reduced for optimal water distribution. For this purpose, you can use the Tamper Base Convex, as it leaves a cavity in the middle of the pressed powder, for better water distribution.

The size of the tamper to be used varies according to the manufacturer. Here you will find a list of manufacturers and their required sizes for tampers:

- Delonghi BAR Tamper 51mm
- Dalla Corte 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
- IIsomac Tamper 58mm
- IZZO Lever Tamper 53 mm
- 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 (starting from 1999) Tamper 51mm
- La Pavoni Manual Lever for Domestic Use (until 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.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 68705659354

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HauntedBurgerz
Cuba, US
★★★★★ 5
Perfect for my use
Works as intended. Solid build quality and works with my Windows laptop through the USB C connection. I wish the product description would clarify that the USB ports do not support video.
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Reviewed in the United States on April 15, 2026
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Amazon FAN!!!
Lake Worth, US
★★★★★ 5
Good Buy
It's been more than a month it works great, no issues. Does not heat up, good material, compatible with both Mac and Windows, I have both OS laptops.
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Reviewed in the United States on April 29, 2026
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Verified Purchase
salila t.
Chelsea, US
★★★★★ 5
Great item!
works great. I can plug my backup into it and my printer, so I don't need to connect the printer to the internet.
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Reviewed in the United States on April 28, 2026
M
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Michael
Waukegan, US
★★★★★ 5
Grub for a good price you wont be disappointed
**Works wonderfully with Apple devices** Plugged the hub into an M2 MacBook Air and everything was recognized instantly: the 4K @ 60 Hz HDMI output displayed crisp colors, the 100 W PD pass‑through kept the laptop charged at full speed, and the SD/TF slots read cards without any lag. The same seamless experience repeated on an iPad Pro 2024, proving the hub s broad Apple compatibility. **Good flexible cables & build** The included 1 m USB‑C cable is surprisingly supple; it doesn t kink when you bend the hub around a laptop stand, and the strain‑relief sleeve prevents the connector from pulling out. The hub s aluminum body feels solid yet lightweight, and the rounded edges match Apple s design language, giving it a premium look that blends nicely on a desk. **Ethernet port performance** The Gigabit Ethernet port delivers stable, low‑latency connections even when the hub is powering the laptop at 100 W. It s a reliable fallback for Wi‑Fi‑poor environments **Overall impression** The Revodok 7‑in‑1 hub hits the sweet spot between functionality and aesthetics. It provides everything a Mac‑centric workflow needs high‑resolution HDMI, fast data ports, card readers, and robust Ethernet while looking like an extension of Apple s own product line. For anyone juggling multiple peripherals on a MacBook, iPad, or even a Steam Deck, it s a solid, hassle‑free solution.
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Reviewed in the United States on December 20, 2025
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Verified Purchase
Emily G
Boise, US
★★★★★ 5
Reliable Dongle
Works well! Very helpful for work and has all the connector ports I need. Never have trouble connecting with this.
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Reviewed in the United States on May 20, 2026

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