Henson Shaving
Henson's razors are all-metal DE safety razors with no plastic cartridge and a standard recyclable blade. The body is machined aluminum finished with Type-II anodizing rather than plating, so there's no chrome layer to chip - the color is grown into the metal itself. That makes them both fully plastic-free and more finish-durable than plated-zinc razors.
How clear are their specs?
Names the exact material and finish - aircraft-grade aluminum, Type-II anodized - and describes the machining tolerances openly.