Abstract
A tool for one-handed operation includes an open-ended cylinder having two half-cylinders coupled at first circumferential ends thereof. A retainer, coupled to the open-ended cylinder, has a spring-bias to automatically couple the half-cylinders when second circumferential ends of the half-cylinders are in contact with one another. The retainer is operable by a single finger of a user's hand to overcome the spring-bias such that the half-cylinders may move relative to one another. A first axial end of the open-ended cylinder slidingly receives an open-ended sleeve, and a second axial end of the open-ended cylinder has an internal annular ledge that provides an annular seat for the open-ended sleeve. A set of apertures extend through radial walls of the open-ended cylinder with each aperture including a portion located a distance from the annular ledge that is greater than an axial length of the open-ended sleeve.