Item was designed for preventing vibration orgasm.A outer sleeve tube fixed on base ring but no touch to the inner penis tube.Therefore, the vibration stimulus cannot be transmitted to the glans.Inner tube style and outer tube style is not limited.You can customize other styles based on your demands.
Material is titanium,don't offer stainless steel version because SS version would be very heavy.While titanium is almost half weight of SS,so use tianium for making.
Lock mechanism is screw.
You can only customize the sizes of the inner cage.
Chastity cage overall length(from base ring to the tip of inner tube's tip)
Inner penis tube's inner diameter
Base ring inner diameter
OR other details of inner tube.
As for the size of the outer tube, it is determined according to the shape and length of your inner tube, so its customization is not accepted.