Cold Steel Click-N-Cut Replacement Blades 2.5in 420J2 SS Drop Point Blades 3 Pack Silver. Weak locking mechanisms thin brittle blades and an inability to do hard work. Cold Steel has addressed this problem and created a utility knife that's all about strength. The Click-N-Cut features elements that are based on the extremely strong Tri-Ad lock so it's built for strenuous cutting chores. It comes complete with three interchangeable blades. The blades are double the thickness so they can stand up to the most strenuous cutting scoring scraping and gouging tasks you can imagine. Exchanging a blade is easy. The handle has a lock bar release similar to the release on a folding knife. When the lock bar is pressed the blade slides easily out. Keep the lock bar pressed and slide a new blade in and release the lock bar and the blade will click into place. Specifications for Cold Steel Click-N-Cut Replacement Blades: Manufacturer: Cold Steel Blade Length: 3.5 in Blade Shape: Drop Point Blade Material: 420J2 Package Contents: Cold Steel Click-N-Cut Replacement Blades Cold Steel CS-40AP3AZ: Click-N-Cut Replacement Blades 2.5in 420J2 SS Drop Point Blades 3 Pack Silver