The IWI brand… looks like it may be from Japan. Amazon sells this brand line, and the IWI Fusion (pen or pencil) for ¥2,845. Reviews are very mixed though. LINK
Cincinnati, Ohio based luxury pen shop called 411 Pens has it for $18 USD.
They describe the IWI Fusion mechanical pencil as “Fusion consists of a stylish carbon fiber body with matching raw brass or electro-plated trims. Available both as a ball pen or mechanical pencil.” And that’s it. No other details. Only 0.5 mm. No clue if it’s double-knock.
IWI is International Writing Instrument Corp. of Taiwan. OEM since 1985 and exports to over 80 countries. IWI stationery line was created in 2015 as in house brand.
Well, I just got hold of one for like 1300 JPY. For a carbon fiber body, it is NOT light at all due to the metal (brass?) inner support shaft, cone and button. Online specs say 27g! Feels nice, although again, the carbon fiber is like a visual element rather than a structural one. I think it is a pretty nice complement to the Tombow Zoom 101 carbon fiber series, which also has a deliberate carbon weave pattern. However, the choice of aluminum / duralumin on the Tombow makes it feel light and strong, unlike the IWI.