Alchemy Steel Flex Nib Unit Finish:Silver - stainless steel and are untreated

and are untreated

And sketching

58mm diameter × 38mm height - slips effortlessly into pockets and bags

But they are standard Jowo #6 compatible so should fit most pens that use this system (many leading brands as well as independent pen makers use this standard)

Alchemy Steel Flex Nib Unit Finish:Silver - stainless steel and are untreatedImagine a stainless steel flex nib that performs like vintage gold flex. Super soft. With flex swells upto 2mm. And crip snapback. For precision and control. That's what we've achieved with the Alchemy Flex. It's been over 9 months of product development. Scouring the literature for stree strain curves. Testing and selecting modern stainless steel alloys. And fine tuning the geometry of the nib. This is modern steel flex. We design our nib units to be