The Thinktank

Head strong

Ultra-minimalist male chastity device innovation comes to a head in the SteelwerksExtreme Thinktank line of cap-only locking penile devices. This ultra-lightweight crown stays in place by exclusive means of the wearer’s piercings, bolstered by diametric customization to the wearer’s penile corona. The need for secure installation is firmly addressed in this super low profile male chastity device by means of personalized Steelwerks Extreme's signature locking piercing jewelry.


This chastity device features a full-length prince’s wand style locking urethral insert and fully vented cap. Our proprietary S-screws hold everything inextricably in place, under the sole dominion of the authorized keyholder. Totally customizable to suit any combination of piercings, and available with total flexibility in your choice of urethral inserts, bladder release plugs, and the entire range of cap styles. Available in either mirror-finished high polish “white” titanium, or the entire palette of vibrant anodized color.



  • Surgical grade titanium


  • 4 axis CNC machined
  • Wire EDM / Sinker EDM
  • Hand polished to a mirror finish.


  • Fully vented head cage
  • One piece shaft collar
  • Urethral tube with extension
  • Locking PA crossbar


  • Locking PA crossbar
  • Proprietary Steelwerks S Screws
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