Outdoor Edge RazorSafe Replacement Blades 6-pack

From the manufacturer:

Set of six Japanese 420J2 stainless steel replacement razor-blades. Each blade is precisely heat treated and hand finished to a surgically-sharp cutting edge.

Japanese 420J2 Rockwell-C hardness: 57
Blade: 3.5 in / 8,9 cm

PROP 65 WARNING FOR CALIFORNIA RESIDENTS
This product contains chemicals including chromium which is known to the State of California to cause cancer, birth defects, or other reproductive harm. https://www.p65warnings.ca.gov/