disposable knife with sliding blades scored so they can be broken off to reveal fresh edge as they dull
Compare Stanley knife.
For Skiving
Several shoemakers and also leathercrafters report good results skiving with snap-off knives like OLFA’s 18 millimeter L-1 or L-2.
Users report that some flexibility in the blade is useful. However, makers have injured themselves bending snap-off blades to the point they snap off unexpectedly, sending segments of sharp blade flying. Be warned!