Oxballs MasterJack Double Penetration Stroker - Jo Black Ice

Oxballs MasterJack Double Penetration Stroker in Jo Black Ice

The deep-toned Jo Black Ice version of the Oxballs MasterJack Double Penetration Stroker puts heavy, realistic texture right in your hands. You get a two-sided design that adapts to your exact preference, whether you want tight stimulation or a faster, looser pace. This dedicated tool replaces basic hand techniques with a structured experience that stays secure throughout your routine.

Grip and Material Details

• Secure Handle: The attached grip keeps the device firmly in your fist even when fully lubricated.
• Textured Exterior: Industrial diamond plate patterns cover the outside for reliable traction without irritating your palm.
• Plus+Silicone: The body molds from a soft, blubbery silicone blend designed for close-to-skin comfort.

Switchable Internal Channels

Flip the stroker to change how the shaft meets your skin. One side packs a tight pathway lined with dense ribs and raised nubs for strong, focused friction. The reverse side opens into a ringed bore with a wider mouth for a gentler, smoother glide. Pair either opening with your preferred lubricant to dial in the exact speed and pressure you need.