Blue Line Stainless-Steel Urethral Play Chastity Cage combines a rigid open-bar shaft cage, separate base ring, keyed padlock, and removable hollow urethral insert. The Stag Standard listing uses store SKU BLM5016 and GTIN 4890808255582. It is entirely manual: there is no motor, battery, charging cable, remote, app, or electrical function.
This is an advanced specialist product. Ordinary chastity fit and urethral insertion are separate risk decisions, and a workable external cage fit does not establish that the insert is appropriate for a particular person. Read the package instructions, measure the external hardware before opening, test the cage without the insert, and seek qualified medical guidance before attempting urethral insertion. This product page provides comparison and safety boundaries, not medical clearance or insertion training.
Published dimensions and exact listing facts
- Material: Rigid stainless steel with metal locking hardware, according to the controlled product record.
- Color: Silver.
- Cage length: 3.5 inches.
- Maximum external cage diameter: 1.5 inches.
- Base-ring inner diameter: 1.9 inches.
- Urethral component: Removable hollow insert; the listing does not publish its length or diameter.
- Locking format: Keyed padlock.
- Store identifiers: SKU BLM5016 and GTIN 4890808255582.
The 1.5-inch measurement describes the cage’s maximum external diameter, not the urethral insert. The listing does not publish a complete internal fit diagram, insert gauge, insertable length, device net weight, safe-wear duration, or medical specification. The stored product record does not support filling those gaps by inference. Compare other current items carrying the Blue Line product tag without treating similar-looking hardware as interchangeable.
Decide whether the removable-insert format fits the plan
The insert can be removed when urethral contact is not wanted. That makes it possible to evaluate the external chastity cage separately, but it does not turn the insert into a routine beginner accessory. Do not add the insert merely because it is included, because a partner expects it, or because the cage fits externally.
Before any use, decide who will wear the product, who will hold the key, where a backup release method will be, how the wearer can stop immediately, and whether the insert will remain completely out of the plan. Chastity and control language never replaces ongoing consent. The wearer must be able to withdraw consent and regain prompt access to removal.
For broader comparisons, review the Urethral Play category, the Chastity and Pup Play category, and the Chastity and Denial department.
Fit the external cage and ring before considering the insert
Start with the external components only. Compare relaxed measurements with the published 3.5-inch cage, 1.5-inch maximum external cage diameter, and 1.9-inch base-ring inner diameter. Those numbers describe hardware; they do not account for movement, temperature, temporary swelling, skin folds, or individual anatomy. The Sizing and Fit page explains why product measurements are comparison inputs rather than guarantees.
- Inspect the ring, cage bars, joints, posts, insert connection, padlock, and keys for burrs, sharp edges, corrosion, deformation, residue, or misalignment.
- Confirm that the ring and cage can be fitted and removed without the insert and without closing the lock.
- Keep skin clear of joints and locking points; never use the padlock to pull parts into alignment.
- Check temperature, color, sensation, swelling, urethral alignment, and urination while the setup remains unlocked.
- Reassess while standing, sitting, walking, and bending slowly, then remove and inspect the skin.
If the supplied ring or cage does not provide a straightforward, immediately removable fit, stop. Do not bend bars, add improvised spacers, force the post, use tape as structural hardware, or rely on swelling to hold the device. The chastity cage fit and safety guide gives a fuller external-fit framework.
Medical boundary for urethral insertion
Urethral insertion can cause tissue injury, bleeding, infection, urinary blockage, and scarring. A smooth appearance does not establish a safe diameter, depth, or technique, and the current listing does not publish the insert measurements needed for an informed fit comparison. Seek guidance from a qualified clinician who understands urethral anatomy and your health history before attempting insertion, especially with prior urinary symptoms, urethral narrowing, surgery, infection, bleeding, reduced sensation, anticoagulant use, or any condition that may affect healing or pain perception.
This page intentionally does not provide an insertion sequence, depth target, gauge progression, or do-it-yourself sterilization method. Do not improvise with household lubricant, numbing agents, saliva, oils, tools, replacement tubing, or an insert from another product. Never force past resistance. The absence of immediate pain is not proof that tissue is undamaged, particularly when sensation is reduced.
Do not insert the component while intoxicated, fatigued, rushed, unable to communicate clearly, or without prompt access to medical help. A partner should not perform or control urethral insertion unless every participant has the appropriate knowledge, consent remains active, and the wearer can stop the activity immediately.
Test the complete external setup unlocked
If the external cage has passed a separate fit check, test the complete external assembly again with the urethral insert removed. The first trial should be brief, sober, supervised, unlocked, and immediately removable. Use the package instructions as the controlling assembly guide.
- Wash and dry hands, inspect all parts in good light, and confirm both the working key and backup key are present.
- Assemble the ring and cage without closing the padlock and without the urethral insert.
- Check that no skin is pinched and that the urethral opening is not compressed, displaced, or covered by hardware.
- Stand, sit, walk, and bend slowly while monitoring circulation, pressure, temperature, and sensation.
- Confirm that urination is possible without strain, painful flow, unusual spraying onto trapped skin, or retained moisture.
- Remove the product, inspect the skin and urethral opening, and clean and dry the hardware rather than automatically extending the session.
Do not sleep, drive, exercise, use intoxicants, travel through security, or leave the wearer unattended during a fit test. No published information on this listing establishes a safe continuous-wear period.
Hygiene, lubricant, and insert handling
Follow the product instructions and any clinician guidance first. Urethral contact requires a higher hygiene standard than external wear. The listing does not establish that the assembled product arrives sterile, remains sterile after handling, or can be sterilized by boiling, bleach, steam, an autoclave, a dishwasher, or household chemicals.
If a clinician advises use, follow their directions for hand hygiene, equipment preparation, lubricant, handling, and aftercare. Use only a lubricant specifically appropriate for the intended urethral application and any material or medical requirements they identify. Do not touch a prepared insert to an unclean surface and then continue. Do not share the insert. Do not attempt insertion when the component is scratched, bent, rough, corroded, contaminated, or missing verified dimensions.
Keep care claims conservative. “Stainless steel” describes the listed material, not the sanitation limits of the complete cage, lock, joints, finish, or hollow insert. Review the broader limits on the Materials and Care page.
Locking, keys, consent, and urination checks
Test the padlock and every supplied key away from the body before each session. Confirm that the lock opens smoothly and remains reachable in the intended position. Keep one verified key immediately accessible to the wearer and a second known backup with a trusted adult. A key in another building, vehicle, checked bag, or inaccessible lockbox is not a rapid-release plan.
Use a plain verbal stop signal and a nonverbal alternative. The wearer’s request to stop ends the activity. Do not delay removal to finish a scene, test a theory, or preserve a keyholder role. Never lock the cage while experimenting with insert fit, and never use the lock or cage pressure to advance, hold, or force the urethral component.
Test urination while the external setup is unlocked and the insert is absent. The hollow description does not guarantee unobstructed drainage, safe urination through the insert, or freedom from leakage against tissue. Painful urination, weak or interrupted flow, inability to pass urine, blood, discharge, or new swelling requires removal and medical attention rather than another fit adjustment.
Stop signs, urgent care, cleaning, and storage
Remove the external device immediately for genital pain, numbness, tingling, coldness, marked swelling, color change, loss of sensation, broken skin, difficulty urinating, or any new symptom. Stop urethral activity for pain, resistance, bleeding, bloody discharge, blood in urine, burning, fever, chills, foul or cloudy urine, pelvic or abdominal pain, a weak stream, or reduced urine output.
Visible blood at the urethral opening or in urine, inability to pass urine, severe or increasing pain, significant swelling, fever with urinary symptoms, or a component that cannot be removed safely warrants prompt medical evaluation. If the cage cannot be removed and circulation appears impaired, or if there is a medical emergency, seek urgent help rather than cutting near the body or continuing to troubleshoot.
After external use, follow the package care directions. If the label permits, clean accessible surfaces with mild unscented soap and warm water or a material-compatible toy cleaner, rinse away residue, and dry every channel, joint, hollow space, lock, and key completely. Do not claim a part is sterile because it looks clean. Store the fully dry product unlocked in a clean, ventilated container, with the insert protected from contamination and the keys separately but readily locatable.
Retire the product for corrosion, a rough edge, bent cage bar, damaged finish, blocked hollow channel, loose connection, misaligned post, unreliable key, or sticking lock. Opened intimate products have hygiene-related return limits; read Returns, Refunds, and Hygiene before opening.
Exact product summary
- Product: Blue Line Stainless-Steel Urethral Play Chastity Cage.
- Store SKU: BLM5016.
- GTIN: 4890808255582.
- Format: Manual open-bar stainless-steel cage with removable hollow urethral insert and keyed padlock.
- Published cage size: 3.5 inches long with a 1.5-inch maximum external diameter.
- Published base-ring size: 1.9-inch inner diameter.
- Insert-data boundary: The listing does not publish the insert length or diameter.
- Fit boundary: Establish the external cage fit separately and unlocked; it does not establish urethral suitability.
- Medical boundary: Seek qualified guidance before insertion and stop for any injury, infection, or urinary warning sign.
Before ordering, confirm the current price, stock state, and listing details on this page. Review discreet shipping information or return to the full shop to compare current products.




