Doc Johnson Vac-U-Lock - Deluxe 360 Degree Swivel Suction Cup Plug - Swivels in Any Direction & Angle to Work Every Hot Spot, Black

I received this yesterday and am pleased with what I have seen so far. This is basically a hand grip for using the Doc Johnson Vac-U-Lock line of strap on dildos. If you are not familiar with this line of dildos, I recommend doing some research. They have been around for many years (15 or so if not longer) and are very well regarded and easy to use. The Knuckle Up gives you a new option for play with the Vac-U-Lock dildos. There is a nice selection of dildos available from a 6" average unit to one that measures over a foot long and has girth that only the boldest players will be able to enjoy and appreciate. The 6" and 7" models are pretty common and average sizes. Both would be easily used with the Knuckle Up. Moving to an 8" will give you a bit more of a work-out. The 8" is longer and heavier and changes the balance/weight distribution a good bit. Still effective but more challenging for rigorous play. If you move up to the monster ("Hung") model, it's going to be a lot more of a workout. The weight will be mostly at the end of the dildo and unless you use a second hand, support and guidance will be a challenge. You might feel that way with something as small as the 8" depending on the play involved. The best thing about this is it's a nice option from having to use your Vac-U-Lock dildos ONLY as strap on devices. The Knuckle Up gives you more direct control and coordination as well as different options for additional stimulation with your other hand. For the price it is a nice addition to the toy chest. If you're just getting into the system, you can certainly take your time and enjoy the belts (they make several different models) before adding this. Or, maybe you can decide to start with this instead. Strap on systems have certainly become much more accepted in sex play in recent years, especially among female only lovers. But there is a huge advance in acceptability among the heterosexual community and more couples are exploring different options. The Knuckle Up is a nice way to add a different option to all of the above play. We have now ordered a second one as one of our friends fell in love with the original and we gave it to her as a gift. So much fun and so much more flexible than just holding a dildo or trying to wear a strapon. But it now!!

Garbage. The lock ring for the swivel base doesn't screw down tight enough to hold it secure. The suction cup is worthless. Will not attach to anything securely and it just falls off. On top of it you can't return this because it's a personal product. What a waste of money.

Good Value, This product would improve with smooth rounded edges for finger placement and maybe a rubberized tail grip that is a bit springy but still resistant to lube deterioration. Otherwise price point works as intended.

Doc Johnson is by far one of my favorite makers of adult toys out there, it's been around for years, but the Vac-U-Lock takes this brand to a higher level. From beginner to extremely advanced freak, Doc Johnson has something for every level. If you are beginner, I would suggest something down from this. A more experienced user will be able to use this toy safely and pleasurably. The knuckles have a rather larger grip (I'm female with med-lg hands) so I had to just hold it and use it a little before feeling comfortable. I did end up sanding the brass knuckle part because the edges were a bit rough and that helped my hand fit more comfortably as well. Can be used for masturbation or partner play. Very fun for female top, but pick your dong wisely because it's more of a workout than you'd think! Overall:: I would buy it again and I would recommend to anyone looking for something out of the box. (Literally)

This item doesn’t hold up. For what it’s purchased for. It doesn’t work. The suction cup has very little grip. Before it breaks away from its contact location. Which makes this item a waste of money. They will not refund your money. You will get ripped off like I did. ☹️

OK and holds toys well just doesn't stay well on tile

First and for most you can take it in the shower where it does wonders. Suction is really decent for just you normal suction pad. All of it is plastic and what keeps it kind of staying put are little plastic spikes where th ball joint meets the suction pad so that will go at some point. Though I still have to say again because it's plastic it works great in water.

This Vac u lock does not stick on most surfaces. The profile of the actual suction cup is almost flat, so its almost made to fail from the start. This is going in the garbage. Doc Johnson should stop making this.

Only buy for smaller toys. The swivel mechanism isn't strong enough to support large toys, they just droop downwards and start breaking the lock. Definitely a better idea to buy a simple fixed vac-u-lock product. This isn't worth the hassle.

This is a great product. I use it with the love arc bar to use toys with compatible holes in them. This works great and I highly recommend it.

ni la ventosa es buena (probada en 3 superficies) ni tampoco la extracción despues de su uso en el juguete ha sido fácil. No admiten devoluciones en esto, así que dinero perdido. NO LO COMPRES

No sirve. Plastico demasiado rigido y de mala calidad. Costoso

Works great, great service