420 Stainless Steel
A high strength stainless steel used in many Leatherman multi-tools, often for handles. 420's higher chromium content makes this steel corrosion resistant.
420HC Stainless Steel
An improved, high-carbon (HC) form of 420 stainless steel that works well with high production tooling. 420HC's strength is optimized in Leatherman multi-tools by heat treatment.
Black oxide is a powder-based metal coating. Ideal for situations where giving away a position would be costly, it is widely used by the military for its effectiveness in reducing glare and reflection.
A hard, heat-resistant and corrosion-resistant material made by shaping and then firing a nonmetallic mineral at a high temperature.