The blade lock prevents unwanted opening of the claw cutter. The safety guard behind the blade regulates the cutting length and keeps the claw from pushing through too far. Shorten your pet's claws at home in a positive atmosphere. With integrated nail file for perfect nail care. Great for finishing sharp edges after cutting. This dog nail clipper is crafted for sharp, precise cuts, making it an indispensable part of your dog and puppy grooming toolkit.