Leaf Shave
Leaf's razors are all-metal - zinc and stainless bodies with standard steel blades - so there's no plastic cartridge in the shaving path. The blades are ordinary double-edge blades (whole or snapped in half), which recycle as scrap steel rather than heading to landfill like a fused plastic cartridge.
How clear are their specs?
Describes the razors as zinc-and-stainless and is clear about which blade format each model takes, but doesn't publish stainless grades.