Can confirm: Have the proper tool, if I shot video showing how fast I can have arms on/off with it, everyone that's ever spent time to pound, drill or clamp one out would probably smack their own face. Probably not faster than what the OP installed here, but I have no doubt I can have a pair of cotters out and in again faster than most people remove a single tapered crankarm. Best part about using the right tool, I've never had to face/file a cotter unless someone else banged it - the right tool pops it out undamaged.