The picture you see before you has Willard shapers in both five, and ten cents. The nickle shapers are for standard (13 mm) to about 12.5 mm size shafts. The dime size for 12.5 and smaller, depending of course, on personal preference.
These tip shapers are the best, bar none, and will last for a very long time.
A word of caution: Do not place the shaper on the poolroom floor, holding it with a foot, and then jamming the entire cue into it. Simply hold the shaft in your right hand and the shaper in your left, then twist back and forth until the tip has a fresh surface, or vice versa if your are wrong handed. :smile: