Abstract: A "pop-top" or "snap-open" can is provided with means for retaining the tab defined by a weakened section, following its severence from the top for opening the can. A rivet extends upwardly from the weakened portion and is engaged with an elongated key having a handle at one end. The shank of the key is provided with a slot through which the rivet extends so that the key is slidable between a first position at which the key is disposed within the periphery of the can top and a second position at which the handle extends beyond the can top periphery. In this extended position the handle may be manually grasped and digitally twisted for purposes of severing the tab from the top by twisting or curling it around the shank of the key. A second rivet extends upwardly from the top and is provided with a swivel connection for the key that permits its twisting motion; and, at the same time, the retained key may be pivoted away from the can top opening after the tab has been severed.