QUESTION: What is the "dual blade opening" described above? ANSWER: You can set the thumb latch (lock) in two positions; one will allow the blades to only open up about a half-inch so as to keep the blades from springing open too far when doing smaller diameters and more delicate cutting. The next setting will open the blades all the way each time you want to make a cut, for bigger applications. There is also a third positioning for the thumb latch, which is to lock the blades shut when not in