One-grinder range
The heptagonal burr and broad external scale cover espresso, pour-over and immersion methods in one compact tool.
1Zpresso
K-Ultra, Iron Gray
A general-purpose hand grinder with a 48 mm heptagonal burr, external adjustment, folding handle and magnetic cup.
- Score
- 7.5/10
- Est. life
- 15 yrs
- Cover
- 1 yr
Last-known catalog price
$259.00
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Product Overview
The K-Ultra is 1Zpresso's general-purpose premium hand grinder, using a 48 mm heptagonal conical burr intended to balance filter clarity with enough fine-range control for espresso. Its external ring provides 100 clicks per rotation at 20 microns per click, making settings visible and repeatable wit...
$259.00
In Stock
Specifications
- OverviewBrand
- 1Zpresso
- OverviewProduct category
- coffee-grinders
- OverviewExpected lifespan
- 15 years · We Buy It For Life editorial estimate
- Dimensions & WeightWeight
- Approximately 700 g
- Performance & CapacityCapacity
- 35-40 g magnetic catch cup
Why We Love It
The features that make this product stand out from the competition.
Readable adjustment
One hundred external clicks per rotation make returning to saved settings fast and repeatable.
Built for travel
A folding handle, magnetic cup and fitted case reduce bulk without relying on fragile electronics.
Detailed Quality Score Breakdown
Core Performance
Primary Performance
8.7
1Zpresso documents the K-Ultra's 48 mm heptagonal burr and general-purpose range across espresso and filter methods.
Feature Richness
7.0
The official product page documents external adjustment, folding handle, magnetic cup and tool-free cleaning.
Build Quality
8.0
AI-assisted preliminary estimate pending editor review and durable-source evidence.
Reliability Score
7.7
AI-assisted preliminary estimate pending editor review and durable-source evidence.
Longevity
Durability Rating
7.7
AI-assisted preliminary estimate pending editor review and durable-source evidence.
Wear Resistance
7.0
AI-assisted preliminary estimate pending editor review and durable-source evidence.
Component Replaceability
7.6
AI-assisted preliminary estimate pending editor review and durable-source evidence.
Design Timelessness
7.9
AI-assisted preliminary estimate pending editor review and durable-source evidence.
Serviceability
Repairability
7.2
AI-assisted preliminary estimate pending editor review and durable-source evidence.
Spare Parts Availability
7.6
AI-assisted preliminary estimate pending editor review and durable-source evidence.
Warranty Coverage
5.3
1Zpresso states that all direct-sold grinders include a one-year limited warranty for material and workmanship defects.
Service Network
6.4
AI-assisted preliminary estimate pending editor review and durable-source evidence.
Value
Total Cost of Ownership
7.5
AI-assisted preliminary estimate pending editor review and durable-source evidence.
Resale Value Retention
6.7
AI-assisted preliminary estimate pending editor review and durable-source evidence.
User Satisfaction
8.1
AI-assisted preliminary estimate pending editor review and durable-source evidence.
Total Cost of Ownership Calculator
The sticker price is just the beginning. Use this tool to estimate the true long-term cost of this product. Adjust the sliders based on your expected usage and care to see how the value holds up over time.
Buy box purchase price$259.00
Based on your estimates, the true cost is:
$1.30 / month
$15.60
Per Year
$234.07
Over 15 years
Calculation: (Purchase Price + Total Maintenance - Resale Value) ÷ Lifespan
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Sign in to view price historyFrequently Asked Questions
How does the K-Ultra’s grind adjustment work?
The external adjustment ring provides 100 clicks per full rotation, with each click moving the burr by 0.02 mm (20 microns). The pointer indicates the setting, and higher numbers produce coarser grinds. The manual says to avoid overtightening the dial, which can make the grinder stick.
How should the K-Ultra be cleaned?
Do not wash or soak the K-Ultra. The manufacturer’s manual directs owners to disassemble it as described, then clean the parts with a brush and an air blower. It also recommends storing the grinder in a dry place; the product page lists a cleaning brush and blower among the package contents.
Does the K-Ultra need calibration after cleaning or reassembly?
Yes. After reassembly, the manual says to calibrate the adjustment dial ring. The zero point is where the handle begins to spin with resistance, rather than the absolutely tightest position; the dial is calibrated when its pointer aligns with #0 at that point. The manual provides adjustment steps if it does not align.
What are the K-Ultra’s catch-cup capacity and portability features?
The magnetic catch cup is specified at 35–40 g. The K-Ultra also has a foldable crank for storage or travel, and the product listing includes a carrying case, cleaning brush, and cleaning blower. The listed product weight is approximately 700 g, so the grinder is portable but not ultralight.
What warranty caution applies to the K-Ultra’s handle?
The product page states that the K-Ultra comes with a one-year warranty. Separately, the K-Ultra manual warns that the handle will not be covered by warranty if any part of the handle is taken apart. Owners should therefore follow the folding instructions and avoid disassembling the handle when seeking warranty coverage.
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