REVHAMMER shaft-strapped shaker is a COCKRING plus shaft-ring that puts the vibe shaftwise, lengthwise up on top, its got a rubbery front nub that seeks to aim at any hole you wanna fuck—every thrust missiles the buzz-vibe up against the gape-lips..or even the BJ's pucker..REVHAMMER sends vibe into the both your shaft and the lucky shaftee...