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-lipsor even the BJs puckerREVHAMMER sends vibe into the both your shaft and the lucky shaftee. Good stuff! Every thrust moves the hummy-buzz deeper, closer to its targetthe boys at hunkyjunk wanted a piece of vibe-gear you feel fucking and feel getting fucked. REVHAMMER straps on with a rubbery cockring in back, the vibe lays on top of your dick and the front ring stretches around your shaft about 1-1.5 from the base. The rings secure the reverb-vibe for lots of hard play. Like JO with this thing humming at the base of the dick and fucking with it, its excellent couples gear. Cool feature: there are shaft-top ribs under the rubbery vibe that holds lube to rub you right. HOW TO: a bit of light lube on your junk, slide your junk through front bigger ring, your shaft through the smaller ring. Click the waterproof, silicone sealed buzz-vibe on and hammer away. Its a cockring, shafring and missile-vibe Vibe lays shaftways on top, with a rubbery bumper tip Vibe wrapped in rubbery thick material Silicone seal vibe bullet: waterproof, sealed button SILICONE matt velvet finish silicone/TPR blend VIBE UNIT: 3 button batteries give 5-7 hours buzzfucking vibing. Battery size: LR44, comes with three. MEASUREMENTS: Height: 3 (7.62 cm) Width: 2 (5.08 cm) Length: 3.5 (8.89 cm) Cockring hole circumference: 4 (10.16 cm)