1Zpresso J-Ultra Manual Coffee Grinder
- Capacity: 0.07 pounds
- Item Weight: 0.09 pounds
- Material Type: Aluminum
- Color: Iron Gray
Last refreshed Sep 8, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A good fit if espresso is your main brew method and you want finer control over the grind than a general-purpose manual grinder offers.
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ASIN: B0CKYDV932Category: Manual Coffee Grinders
Overview
The 1Zpresso J-Ultra is a manual coffee grinder built specifically for espresso, using a coated conical burr and an external dial that moves in 8-micron steps for fine, repeatable adjustment.
Where the K-Ultra above trades adjustment precision for range across brew methods, the J-Ultra narrows its focus to espresso and tightens the click resolution to about a quarter of the K-Ultra's step size, aimed at people dialing in shots rather than switching brew styles.
- Coated conical burr tuned for espresso sweetness
- External dial adjusts in 8-micron steps, fine to ultra-fine
- Magnetic catch cup holds 35 to 40 grams of grounds
- Foldable handle with a travel case, cleaning brush and air blower included
Who it's for
Espresso-focused home brewers who want small, repeatable grind adjustments rather than a grinder that also needs to handle coarser methods like French press.
Pros and cons
- 8-micron adjustment steps for precise, repeatable espresso dosing
- Coated burr aimed at sweetness at fine settings
- Foldable handle with a travel case included
- Magnetic catch cup speeds up the grind-and-dose routine
- Narrower range than the K-Ultra, less suited to coarser brew methods
- Manual grinding takes more time and effort than an electric grinder
Performance notes
A coated burr is built to bring out sweetness at fine settings, and the external dial adjusts in 8-micron steps across fine to ultra-fine, including Turkish-leaning settings. It shares the K-Ultra's magnetic 35-40 gram catch cup and foldable handle, disassembles without tools, and comes with a cleaning brush and air blower. Rated for 100-200 kg of coffee over its life with a one-year warranty.
Specifications
| Brand | 1Zpresso |
|---|---|
| Dimensions & fit | |
| Item Weight | 0.09 pounds |
| Item Dimensions L x W x H | 7.2 × 2.2 × 7.5 inches |
| Capacity & performance | |
| Capacity | 0.07 pounds |
| Construction & materials | |
| Material Type | Aluminum |
| Color | Iron Gray |
| Included components | |
| Number Of Packs | 1 |
| Included Components | Lid |
| Other details | |
| Number of Items | 1 |
| Recommended Uses For Product | Grinding |
Closest rivals on specs
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Frequently asked questions
How is the J-Ultra different from the K-Ultra?
The J-Ultra uses a coated burr with 8-micron steps aimed at espresso, while the K-Ultra uses 20-micron steps across a broader range of brew methods.
Does it come with a case?
Yes, a carrying case ships with the grinder.
What is the catch cup capacity?
About 35 to 40 grams of grounds.