Ass-X Ass Lock by Oxballs

Restraint during intense BDSM scenes demands precision and security—standard systems often fail to deliver complete control. The Oxballs Ass-X Ass Lock solves this with adjustable harness rings and multiple anchor points, letting you immobilize your submissive exactly as you envision.

What it is

The Oxballs Ass-X Ass Lock is a modular restraint system engineered for serious dominants who demand complete control over their submissives. Built from medical-grade silicone with reinforced polymer attachment points, it delivers secure, adjustable immobilization across multiple body positions. The harness expands from 28 to 42 inches, accommodating different body types without compromising restraint integrity. Its construction prioritises durability and safety during extended scenes.

What sets this system apart is its flexibility: multiple anchor points let you create complex positioning configurations that standard restraints cannot achieve. Unlike basic cuffs or simple harnesses, the Ass-X enables psychological domination through precise physical control and strategic vulnerability. See the full BDSM Australia range of Sex Kits to explore complementary restraint options.

Key features

• Adjustable sizing: Harness expands between 28 and 42 inches with customisable ring diameters from 2 to 3.5 inches, fitting various body types securely.
• Medical-grade material: 100% silicone construction with reinforced polymer attachment points ensures durability and body-safe contact during intense scenes.
• Multi-point anchoring: Multiple attachment locations enable complex restraint configurations and varied positioning for psychological impact.
• No power required: Mechanical design means instant readiness—no batteries, charging, or setup delays before your scene begins.
• Water-resistant finish: Easy-clean surface simplifies maintenance between uses while resisting moisture damage.

Specifications

• Total length range: 28–42 inches with tool-free adjustment mechanisms
• Ring diameter: Expandable from 2 to 3.5 inches per attachment point
• Material composition: 100% medical-grade silicone with reinforced polymer anchors
• Weight capacity: Engineered for sustained restraint during extended scenes
• Water resistance: Fully water-resistant with easy-clean surface
• Power source: None—mechanical restraint system only
• Box contents: Restraint harness, adjustment rings, mounting hardware, storage bag

How to use a sex kit

Position your submissive on the chosen surface—bed, bondage table, or specialised frame. Adjust the harness rings around the targeted body areas, ensuring proper placement for your intended restraint pattern. Secure each attachment point to your mounting surface using the included hardware. Always verify that circulation remains uncompromised and your submissive can communicate their status throughout the scene.

Advanced practitioners often layer this system with additional restraints for comprehensive immobilisation, or combine it with sensory techniques like blindfolding for heightened psychological impact. Experiment with different mounting angles and body positions to discover what creates the intensity you seek. Explore the full BDSM Australia range of Moulding Kits to expand your restraint possibilities. Monitor your submissive's responses continuously, adjusting as needed to maintain both safety and the power dynamic you're building.

Care and storage

Clean the harness thoroughly with mild antibacterial soap and warm water after each use, paying close attention to all attachment points and crevices. Rinse completely and air dry in a cool location away from direct sunlight. Store in the included bag in a dry environment. Inspect polymer attachment mechanisms regularly for any signs of wear or degradation before placing the system back into service.

Learn more

Understanding restraint psychology deepens your dominance practice and strengthens the power exchange with your submissive. Read more about advanced techniques and scene construction on Better Than Sex. Knowledge of your tools and your submissive's responses creates safer, more intense scenes.

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 Ass-X Ass Lock has become essential in my training arsenal. Its precision engineering transforms a simple restraint into a psychological weapon—my submissives understand immediately that escape is impossible. Watching them process that reality, seeing their muscles tense as they test the bonds, tells me everything about their mental state. The multiple attachment points let me position them exactly where I want them, vulnerable and utterly controlled.

My technique involves gradual escalation. I start with lighter restraint, allowing false hope of movement before tightening systematically. Each notch of adjustment becomes a lesson in surrender. Different body types respond uniquely—some require more psychological pressure, others need physical intensity to break through their resistance. By reading their breathing and muscle tension, I maintain the edge between challenge and safety.

What distinguishes this system is how it extends my will directly into their flesh. The silicone grip never wavers, never tires. My submissives learn that resistance is futile and obedience is their only path forward. The device becomes the embodiment of my dominance—cold, precise, inescapable. That psychological impact, combined with physical restraint, creates the depth of submission I demand.

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

Shop the Oxballs Ass-X Ass Lock at BDSM Australia when you're ready to move beyond basic restraints into serious scene construction. Its adjustable harness, multiple anchor points, and medical-grade silicone deliver the precision and control advanced practitioners demand. This is the system that transforms your dungeon from functional to formidable. Everything for Bondage Under One Roof.