Abstract: A double-ended pen has a pair of elongated liquid-holding reservoirs each having a rear end, a front end having a liquid-applying tip, an intermediate portion between the ends and having at the rear end a predetermined relatively small outside diameter, and a snap-type retaining formation. An intermediate coupling sleeve has a pair of oppositely open seats each receiving a respective one of the rear ends and provided with formations for retaining the respective rear ends securely against axial displacement. The sleeve also has a pair of axially opposite ends having axially oppositely directed end surfaces each having a portion extending at an acute angle to a plane perpendicular to the axis. The sleeve ends are of a diameter greater than the outside diameter of the intermediate portions and projecting radially therepast when the respective rear ends are fitted in the seats.