Nippers like this and others have their place. But I’ve found where you are trying to remove delicate parts from heavy sprues or tight spaces no cutter is going to work because of the stresses induced by the blade separating the pieces being cut. A sharp tipped X-Acto blade in a soldering pen does a better job by melting the sprues open which can be then trimmed up for use. Nippers cannot free parts like InterMountain brake wheels which are closely surrounded by a heavy sprue.
Charlie Vlk