Quick verdict
The C40 MK4 is a premium, German-made hand grinder with Nitro Blade burrs and both polymer and glass jars. A US retailer lists roughly 25–30 microns per click and recommends it for Turkish through French press, without espresso on the list. It suits filter and AeroPress brewers who value its build. Espresso users will find coarser steps than the 1Zpresso J-Ultra or X-Ultra.
Buy it if
- You brew pour-over, AeroPress or French press and want a premium hand grinder.
- You like having two jars, one clear and one dark glass.
Skip it if
- Espresso dialing precision is a priority.
- You want the manufacturer's full specs and warranty terms up front.
- Best for
- Filter and AeroPress brewers who value build and the included jars.
- Main compromise
- Internal clicks of roughly 25–30 µm (retailer figure) are coarse for fine espresso dialing.
- Burrs
- 39 mm Nitro Blade conical (high-nitrogen steel)
- Adjustment
- Stepped under the burr, about 25–30 µm per click (retailer)
- Capacity
- About 40 g
Specifications
| Spec | Detail and source |
|---|---|
| Burrs | 39 mm Nitro Blade conical (high-nitrogen steel)Manufacturer: Comandante, Whole Latte Love |
| Adjustment | Stepped under the burr, about 25–30 µm per click (retailer)Retailer listing: Whole Latte Love |
| Capacity | About 40 gManufacturer: Comandante |
| Weight | 1.6 lbRetailer listing: Whole Latte Love |
| Dimensions | 6.3 in H × 2.4 in WRetailer listing: Whole Latte Love |
| Included | Polymer jar, dark glass jar with lid, oak knob crankManufacturer: Comandante |
| Stated range | Turkish, AeroPress, pour-over, drip, French pressRetailer listing: Whole Latte Love |
Comandante's product page lists the burr material and the box contents. It does not list the burr size, click size, weight or warranty (Comandante). Those figures come from Whole Latte Love (retailer).
Strengths and limitations
What stands out
- Nitro Blade burrs in high-nitrogen steel, per the maker.
- Two jars included (polymer and dark glass), plus an oak crank knob.
- Made in Germany.
Limitations
- Coarse steps for espresso: about 25–30 µm per click, per the retailer.
- Sparse manufacturer specs.
- Not in CoffeeGeek's 2025 manual grinder guide, which excluded it over price and design-patent disputes (CoffeeGeek).
Alternatives
- 1Zpresso K-Ultra: an external dial and 20 µm clicks.
- 1Zpresso X-Ultra: lighter, with 12.5 µm clicks.
Our recommendation
I'd recommend the C40 for filter-focused brewers who put build first. For espresso, a 1Zpresso Ultra model is a better fit.
Amazon listing: C40 MK4, black
Sources
- C40 MK4 Nitro Blade BLACK — Comandante. Manufacturer. Accessed September 26, 2026.
- Comandante C40 Coffee Grinder - Black Oak — Whole Latte Love. Retailer listing. Accessed September 26, 2026.
- Best Manual Coffee Grinders for 2025 — CoffeeGeek. Independent review. Mark Prince, Natia Simmons, Zuzanna Kaminski, 2025-09-17. Accessed September 26, 2026.