




These bent cold-knife blades are made for technicians and DIYers who need a precise, low-vibration option for cutting through adhesives, caulk, silicone and other soft bonding materials around car doors and windscreens. Supplied as a two-pack, they fit standard cold-knife holders and are shaped to reach corners and tight seams where straight blades cannot easily access. The design focuses on clean cuts with minimal risk of glass scoring when used correctly and with the appropriate holder.
The bent profile lets you reach recessed seals and awkward angles without forcing the tool or tilting the glass. That curvature offers controlled leverage for penetrating deep-set adhesive while keeping the blade edge aligned with the seal line. Users experience smoother cuts and fewer repeated passes, saving time on stubborn glue and silicone residues.
These blades excel on soft to semi-soft bonding materials: deep-penetrating adhesives, curing caulk, paint edges and silicone sealants commonly found in auto glass work. They also serve for scraping and trimming tasks in automotive bodywork where precision near glass or trim is required. Avoid using them on hardened epoxies or metallic welds, which can dull or chip the edge.
Always mount the blade in a compatible cold-knife holder and wear safety gloves and eye protection. Work with steady, controlled strokes and let the blade do the cutting—forced pressure increases the chance of slips. After use, clean away adhesive residue and store blades dry to prevent corrosion; replace blades when edges show wear to maintain clean results.
The blades are made to fit common cold-knife holders used in automotive glass removal; confirm blade-to-holder compatibility before purchase. The two-blade set gives an immediate spare for uninterrupted work or allows one blade for making cuts while the other handles scraping. Having an extra also means you can dedicate one blade to heavier adhesive jobs and keep the other sharper for delicate finishing cuts.
Who is this for: The NDEFAFLY Cold Knife Bent Blade 2PK is aimed at professional auto glass technicians, bodyshop workers and skilled DIYers who remove windshields, door glass and adhesive seals. If you frequently cut silicone, caulk or deep adhesives around glass or need a blade that reaches tight angles, this two-pack offers durable, purpose-shaped edges that speed removal while helping protect the surrounding glass and trim when used with proper holders and safety precautions.
Q: Are these blades compatible with my cold-knife holder?
A: They fit most standard cold-knife holders, but confirm the holder blade slot dimensions before purchase.
Q: Can the blades cut cured silicone and heavy adhesive?
A: Yes—designed for silicone, caulk and deep adhesives, though very hardened epoxies may dull the edge faster.
Free shipping across Canada on every order, with no minimum. Orders are processed within 1 business day and standard delivery across Canada usually takes 2 to 5 business days after processing, with tracking by email. See the shipping policy.
Free 30-day returns. You have 30 days from delivery to start a return. Return shipping is free: email us your order number and we send a prepaid label. See the return & refund policy.
Not sure it fits? Email northtrailauto@gmail.com with your year, make, model and engine and we reply within 1 business day.






