Snap Off Blade Knife

The blade strip in these utility knives snaps off in segments to remove worn cutting edges and expose sharp ones. Their sliding lever moves the blade strip into and out of the knife handle to retract and extend the cutting edge. Also called breakaway knives, snap-off utility knives make pull cuts to open boxes, trim dried caulk or paint, and slice through soft materials. They are used for cuts where there's minimal pressure on the blade.