Abstract: A generally rectangular body is provided of substantially square cross-sectional shape and the body includes a central longitudinal threaded bore formed therethrough with one end of the bore provided with a smooth diametrically enlarged counter bore opening end wise outwardly of one end of the body. One side of the body is relieved to define a flat mounting surface disposed in a chord plane of the counter bore and mounts a blade member therefrom including an elongated beveled sharpened edge projecting slightly into the counter bore. An abutment screw is threadingly received within the bore and projects at least slightly into the counter bore and may be adjusted to adjustably limit the amount a cue stick mounted tip may be telescoped into the counter bore.

Abstract: A generally cylindrical sleeve is provided defining a bore extending longitudinally therethrough. The end of the bore opening outwardly through one end of the sleeve is outwardly flared and the other end of the sleeve is externally threaded. An internally threaded cap is threadedly engaged over the second end of the sleeve and defines an end wall removably closing the end of the bore opening outwardly through the second end. The inner side of the end wall is partial concave spherical and defines a concave recess opening toward the sleeve first end. A rigid disc having an abrasive disc abutted thereagainst may be clamped between the second end of the sleeve and the outer periphery of the end wall and the first end of the sleeve may be telescoped over a cue stick ferrule and the sleeve and cue stick may thereafter relatively rotated in order to abrasively clean and square the ferrule.