Ultracore Core Ballstretcher with Axis Cock Ring by Oxballs

Testicle stretching demands precision and control—generic rings slip and disappoint. Oxballs Ultracore Core Ballstretcher with Axis Ring combines dual-ring engineering with ribbed silicone grip, delivering sustained stretch and sensation for serious players.

What it is

Oxballs Ultracore Core Ballstretcher with Axis Ring is a dual-ring stretching system engineered for intense testicular play. Its two-piece design pairs a core stretcher with an accompanying AXIS power ring, both crafted from extra-soft Plus Silicone. Interior ribs align with exterior ribs to create unprecedented gripping force, while the hourglass-shaped tunnel prevents slippage during extended or aggressive wear. This is mechanical precision—no electronics, just body-safe silicone and thoughtful geometry.

What sets it apart is the stacking capability: you layer the rings to intensify sensation progressively, adapting stretch to your experience level and anatomy. See the full BDSM Australia range of Ball Stretchers to compare other options. The Ultracore demands respect and knowledge, rewarding serious players with control and sensation that casual stretchers cannot match.

Key features

• Dual-ring stacking: Layer the core and AXIS rings for progressive intensity and customised sensation.
• Ribbed grip surfaces: Interior and exterior ribs align perfectly, maximising hold and sensory feedback during wear.
• Hourglass interior tunnel: Secure positioning prevents slippage, even during movement or intense play.
• Extra-soft Plus Silicone: Body-safe, hypoallergenic material that's firm enough to grip yet comfortable against sensitive tissue.
• No batteries required: Pure mechanical design means no charging, no electronics—just reliable stretching on demand.

Specifications

• Core stretcher: Ribbed exterior with smooth hourglass-shaped interior tunnel for secure testicular placement.
• AXIS power ring: Ribbed interior channel designed to align with core stretcher ribs for maximum grip and control.
• Material: 100% body-safe Plus Silicone, hypoallergenic and compatible with water-based and silicone lubricants.
• Dimensions: Multiple rib configurations allow precise placement and adjustment for different anatomies and stretch preferences.
• Box contents: One core stretcher, one AXIS power ring, comprehensive usage instructions.

How to use a ball stretchers and crusher

Begin with water-based lubricant applied generously to the core stretcher's interior. Gently stretch the silicone ring and position your testicles through the tunnel one at a time, settling them into the hourglass-shaped chamber. Adjust for comfort—firm but never painful. Slide the AXIS power ring over the core stretcher, aligning the ribbed surfaces for maximum grip. Check that circulation remains healthy and sensation is within your tolerance.

For advanced play, experiment with stacking multiple rings to increase stretching intensity gradually. Wear during varied activities—sitting, walking, light movement—to explore how sensation shifts with position and blood flow. Many players combine this with other Ball Gags or restraints for layered sensation. Always monitor comfort, remove if numbness or sharp pain occurs, and allow circulation recovery between sessions.

Care and storage

Wash with mild antibacterial soap and warm water after each use, paying attention to the ribbed surfaces where lubricant residue can collect. Rinse thoroughly and air dry completely before storage. Keep in a cool, dry place away from direct sunlight and extreme heat, which can degrade silicone over time. Store separately from other toys to prevent material contact. Use only water-based or silicone-compatible lubricants to preserve the material's integrity.

Learn more

Ball stretching is a skill that deepens with knowledge and practice. Understanding anatomy, circulation, and sensation thresholds transforms play from risky to controlled. Read more about advanced techniques and safety in the Ball Chain Games Collection. This product rewards study and patience with unmatched pleasure.

Mistress Athena's training notes

By Mistress Athena — professional dominant and kink educator, sole instructor behind BDSM Australia's library of training videos. Read her full bio →

The Oxballs Ultracore gives me precise control over my submissive's vulnerability during a scene. Its ribbed design creates exquisite sensory feedback—every micro-adjustment in ring tension triggers observable responses. I start with gentle stretching, gradually increasing pressure while watching for signs of surrender. The dual-ring system allows me to layer intensity without removing and reapplying, which keeps my submissive in a state of heightened anticipation.

Psychological conditioning works beautifully with this tool. Once rings are positioned, my submissive enters a state of controlled helplessness—aware that any movement intensifies sensation, yet unable to escape without my permission. This power dynamic is exactly why I favour it. The material's smooth texture enables seamless adjustment, while the ribbed configuration provides constant sensory stimulation that keeps my submissive mentally present and obedient.

My most effective technique involves gradual stacking combined with enforced stillness. I position the core ring first, then add the AXIS ring while maintaining eye contact, narrating each step so my submissive understands exactly what is happening to their body. The anticipation alone—before I even tighten—creates profound psychological submission. Circulation checks are non-negotiable; I monitor colour and sensation frequently to ensure safety within intensity.

See this and similar tools in action across my 300+ training videos on the BDSM Australia channel.

How it compares

Why you'll reach for it

Snag the Oxballs Ultracore Core Ballstretcher with Axis Ring at BDSM Australia when you're ready for stretching that actually grips, responds, and rewards skill. Its dual-ring precision and ribbed silicone engineering deliver sensations that simple rings cannot match. This is equipment for players who understand their body and want control to match their intensity. Order now and discover what serious ball stretching feels like. Helping Australians Find the Right BDSM Gear.