I believe this is a Directional One Ounce Helix Inducing Circular Kinetic Impression Exciter. Don’t see this exact model often, but I’ve run in to similar ones over the last fifty years or so. They’re used in a variety of applications and often are a one-use tool that is a derived from a necessity - being the mother of invention. When I was in the Air Force we had similar components and often asked young airmen to fetch “two hundred yards of flight line”, or a “bucket of prop wash”. We also had wiffle trees and snatch blocks – which were often the basis for rather interesting side bar conversations that could not be repeated in the presence of women and children – alas, I digress