The blades are replaceable (#1920, #1922 and #1923)
Includes #1901 Light-duty Knife, #1902 Medium-duty Hobby Knife, #1903 Heavy-duty Knife, 10 assorted blades and wood case.
Resources
WARNING: This product can expose you to chemicals including Nickel (metallic) which is [are] known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.