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The Oxballs Ultracore is a two-piece ball stretcher system: the ribbed CORE ballstretcher plus the AXIS power ring that clamps around its middle. Wear CORE alone for a medium-firm squeeze and steady downward pull, or add AXIS when you want a tighter, heavier hug. In translucent Red Ice, it suits men who already enjoy ball stretching and anyone who likes to adjust intensity without buying a second toy.

How the CORE ball stretcher works

CORE is a short, thick tube that sits around the sack above the testicles. Inside it is a smooth hourglass tunnel that narrows in the middle, so once it is in place it grips and stays where you put it rather than sliding up or down. The tube's height spreads the pressure over a band of skin, which gives a longer stretch and a padded squeeze rather than the narrow pinch of a thin ring. At 2 oz it also adds a little weight, so you feel a gentle tug whenever you move, walk or change position. Outside, CORE is ribbed. Those ribs are not just for looks; they are the anchor points for the second piece.

Adding the AXIS ring for more squeeze

AXIS is a rubbery power ring with channels on its inside that lock onto CORE's outer ribs. Slide it over the middle rib and it presses the stretcher inward, tightening the grip on the sack. Oxballs designed the pair to stack, a step up from the way many stretch fans pile separate rings on top of each other. Because AXIS is a separate piece, you control the intensity: CORE on its own for longer, easier wear, then AXIS added for a shorter, harder session.

Putting it on

A little water-based lube helps, and so does being warm and relaxed, such as straight out of a hot shower, when the skin is looser. Stretch CORE open with your fingers, drop the testicles through one at a time and let it close around the sack, then move it to where you want the stretch. Add AXIS only after CORE is comfortable. Start with short sessions, and take everything off straight away if you feel cold, numbness, pain or see colour changes. Take the AXIS ring off first, then roll CORE down and off. If you are new to stretchers, wear CORE around the house for short spells before you try it during sex, so you learn how it feels when you sit, stand and move.

Plus+SILICONE and care

Both pieces are made from Oxballs' Plus+SILICONE, a blend of silicone for a smooth, warm feel and TPR for stretch and strength. It is phthalate free. Wash both parts in warm soapy water after use, rinse well and let them air-dry apart. Water-based lube is the safest match for a silicone/TPR blend. Store them away from other toys and out of the sun, since coloured material can pick up dye from other items or fade over time. A small cloth pouch keeps the pair together, so the AXIS ring does not go missing in a drawer.

Specifications

  • Brand: Oxballs, Ultracore (CORE ballstretcher + AXIS power ring)
  • Material: Plus+SILICONE (silicone/TPR blend), phthalate free
  • CORE: 2" long x 2" wide x 1.75" deep; inside diameter 1"–1.2" (3–4 cm); outer circumference 7" (18 cm); 2 oz
  • AXIS: 2" x 2" x 0.75" deep; inside diameter 1" (3 cm); outer circumference 6.5" (17 cm); 1 oz
  • Made in China
  • Colour: Red Ice

See more from Oxballs, browse our ball stretchers, or read what a ball stretcher does.

Helpful Information

Frequently Asked Questions

Helpful answers about Oxballs Ultracore Ballstretcher with Axis Ring Red Ice.

What does a ball stretcher like the Oxballs Ultracore do?

The Oxballs Ultracore sits around the sack above the testicles and gently pulls them down while squeezing. Wearers describe a heavy, held feeling that makes the area more sensitive to touch. The AXIS ring adds extra squeeze on top of the CORE stretcher when you want more intensity.

How do I put on the Oxballs CORE?

Get warm first; a hot shower helps. Add a little water-based lube, stretch the CORE open with two fingers and guide one testicle through, then the other. Let it close around the sack and slide it into position. The inner hourglass shape keeps it there.

Will the Oxballs Ultracore fit me?

The CORE has a 1 to 1.2 inch inside opening and the AXIS ring a 1 inch opening, both very stretchy. Most men can get CORE on, but if you have never worn a stretcher, wear it alone first. Too tight means tingling or coldness; take it off straight away.

How long should I wear a ball stretcher like the Ultracore?

Start with 15 to 20 minutes using CORE alone and build up only if it stays comfortable. Keep AXIS sessions shorter, since it adds more pressure. Oxballs doesn't give a maximum time, so remove it immediately if you feel numbness, pain or see the skin darken.

Can I wear the Oxballs Ultracore with a cock ring?

Yes, many wearers pair a stretcher with a separate cock ring around the shaft. Put the Ultracore on first, then the ring, and keep both sessions short. Our cock rings include stretchy options that sit comfortably above a stretcher.

What lube should I use with the Oxballs Ultracore?

Use a water-based lube or a little spit to get the Ultracore on. Its Plus+SILICONE is a silicone and TPR blend, and silicone or oil-based lubes can soften or damage it. You only need a small amount on the inside of the tunnel.

How do I clean the Oxballs Ultracore?

Separate the CORE and AXIS pieces, wash both in warm soapy water, rinse, and let them air-dry apart. Check the ribs and inner channels for leftover lube. Store them out of sunlight and away from other coloured toys to keep the Red Ice finish clear.

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