Controlled blade breakage eliminates the fumbling and finger risk of traditional knife blade changes. Dorco's snap-off system segments each blade into multiple fresh edges, when one dulls, score the breakpoint and snap off the worn section to expose sharp steel underneath. The auto-lock mechanism holds each segment firmly during cuts through mat board, foam core, and heavy paper, preventing the blade wobble that ruins precision work.

South Korean manufacturing ensures consistent edge geometry across the entire blade length. Stainless steel construction on the S101 resists corrosion from adhesives and moisture, while the integrated pocket clip keeps the cutter accessible during installation work or gallery prep. The L301's 18mm blade handles thicker materials that would bind narrower edges. For extended cutting sessions, the S402's textured ergonomic grip maintains control when hands fatigue or materials resist.

Stock replacement blades in 20-count packs, CB-S20B for 9mm models, CB-L20B for 18mm. Fresh edges cut cleaner than struggling with dulled steel, and maintaining multiple sharp segments means fewer interruptions when you're racing against drying adhesive or installation deadlines.