ELMERS X-Acto Light Duty Snap-Off Blade Utility Knife Each (X3244) The X-ACTO Light Duty Snap-Off Blade slices through packages, ropes, canvas and more This uniquely designed snap-off knife is equipped with a slide lock mechanism Knife does not slip or slide Simply snap off the dull blade and keep going with a fresh X-ACTO blade. This is an aftermarket of generic part