1Zpresso J-Ultra Manual Grinder

Precision-Tuned for Every Grind — From Filter to Espresso

An ultra-fine 0.008mm adjustment per click!

The 1Zpresso J-Ultra is a refined manual grinder built for those who love the craft of filter coffee and espresso. Evolving from the highly regarded J-Series (J, JE, JX-Pro), the J-Ultra carries forward a legacy of clarity, control, and thoughtful design — now with even more precision.

With a 48mm stainless steel conical burr and 100 clicks per rotation, the J-Ultra delivers reliable, uniform grinds with micro-metric adjustments of just 8 microns per click. While capable of grinding for espresso, its true strength lies in filter brewing — pour-over, AeroPress, French press, and more — where subtle grind adjustments and clarity of flavour matter most.

Slim and Lightweight Form

The cylindrical, narrow design makes the J-Ultra easy to grip, carry, and store — ideal for both home use and coffee brewing on the move.

External Adjustment Dial

The numbered adjustment dial is conveniently placed for quick, precise grind tuning — no disassembly needed, and easily repeatable between brews.

Magnetic Catch Cup

The grounds cup attaches magnetically, making it simple to remove and reattach. No threading, no hassle — just a clean, efficient workflow.

Optimised for Filter Brewing

Rooted in the J-Series' filter-first philosophy, the J-Ultra is engineered to extract clarity and balance. It provides the fine control needed for delicate pour-over extractions, but still offers enough range for dialling in espresso if needed.

Product includes

1Zpresso J-Ultra Manual Grinder (Iron Grey)

Cleaning brush

Cleaning blower

1Zpresso Carry Case

Main Features

Titanium-Coated Burr 48mm

Remarkably precise grind settings (0.0008mm per click)

Faster, less laborious grinding experience

Precise external adjustment dial ring

Large-capacity magnetic catch-cup (35-40g)

Ideal for both Espresso and Filter coffee enthusiasts

Manufacturer warranty & support

J-Ultra Manual Grinder Review┃Asser Christensen (The Coffee Chronicler)

"A special focus on espresso, the case, the accessories, the build quality, the materials, everything are best in class."