SKU: 83518279203

58mm tamper base knock convex

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Description

58mm tamper base knock convexJoeFrex 58 mm Tamper Base KNOCK CONVEX All KNOCK CONVEX bottom parts have a slightly convex pressing surface to press the coffee grounds. Why the name Knock? After pressing the coffee grounds for the first time, lightly tap (from English Knock) on the side of the filter holder to dislodge any remaining grounds. This allows for subsequent pressing. To avoid using the base of the tamper or the wooden handle for this light tap on the filter holder,

JoeFrex - 58 mm Tamper Base KNOCK-CONVEX

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

Why the name Knock?

After pressing the coffee grounds for the first time, lightly tap (from English Knock) on the side of the filter holder to dislodge any remaining grounds. This allows for subsequent pressing. 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 silicone ring integrated into 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, you can use the Convex Tamper Base, 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. Here 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 Tamper 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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SKU: 83518279203

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4.1 ★★★★★
Based on 21 reviews
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Verified Purchase
Melissa Embury
Battle Creek, US
★★★★★ 5
Chew rope
Size: Small 15", Style: 3 Knot, Pattern Name: Dog, Size: Small 15", Style: 3 Knot, Pattern Name: Dog
Works great for my goldendoodle. It’s held up well to two dogs and lots of playing. It’s nice and large and has held up outdoors in Michigan winters
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 6, 2026
M
Verified Purchase
MURPH
Whiting, US
★★★★★ 5
Sturdy and holding up so far!
Size: Small 15", Style: 3 Knot, Pattern Name: Dog
This is a quality pull toy that my Yorkie ("Finnegan") loves. It is holding together well as my dog can be a maniac at times. Moderate chewing has not hurt this toy. I do not buy toys with squeakers in them as they worry me. Finn entertains himself and then brings toy to me for a tug of war. I recommend this item. Good bang for the buck!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 2, 2026
T
Verified Purchase
TAngell
Belleville, US
★★★★★ 4
Strong
Size: Medium 20", Style: 3 Knot, Pattern Name: Dog
For a five month old puppy with sharp teeth it’s holding up pretty well.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 27, 2026
S
Verified Purchase
Shaienne
Boise, US
★★★★★ 5
EXCELLENT QUALITY
Size: Medium 20", Style: 3 Knot, Pattern Name: Dog
I have a German Shepherd/Pointer mix who is 10 months old. He has been in the throes of teething and destructive exploration. He's chewed up clothing and shoes. He chewed a hole in our couch and one in our brand new mattress (He was never left home alone until this point but as my mother came to visit and my boyfriend was back at work, I had no choice but to trust him alone for about an hour a day for 3 or 4 days... he clearly didn't earn that trust). He loves ropes because he can gnaw them, whip them around, and play tug of war or fetch with them at any given time. We love ropes because they keep him occupied and relieve his desire to chew things. Unfortunately, he was destroying rope after rope after rope. Some ropes were worrisome because they would quickly start fraying and falling apart. We would have to help remove strings he has swallowed from his behind while he was out doing his business... My boyfriend's mother picked up a Mammoth TireBiter tire and rope toy for him but it was much too small. Still, he loved it and it stood up very well to his chompers despite being way too small/weak for him. Looking for a larger version of the Mammoth TireBiters, I stumbled across this rope toy and gave it a shot. Let me tell you, I don't think I will ever buy rope toys from any other brand! We have had this rope for over a month and it is still going strong. It does show some small signs of wear and tear but you would swear we bought it last week. It is very strong and durable. It has held up through many long gnawing sessions. It has been put through countless hours of fetch and tug of war with no signs of giving out any time soon. I am so in love with this rope and so is my pup!
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Reviewed in the United States on September 13, 2020
L
Verified Purchase
Lilly
Grantham, US
★★★★★ 5
Good quality
Size: Mini 10", Style: 3 Knot, Pattern Name: Dog
Small but good quality
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 28, 2026

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