The McDermott 4 inch center pool cue extension is for a 3/8 x 10 Joint. It is designed to be used on every shot and conveniently goes between your shaft and butt to extend you cue to the proper length for taller players or to give other players a little extra reach on the table.

The McDermott 4 inch center pool cue extension is for a 3/8 x 10 Joint. It is designed to be used on every shot and conveniently goes between your shaft and butt to extend you cue to the proper length for taller players or to give other players a little extra reach on the table.