Hi guys. Looking on ebay for a tiny cage with small inside diameter, i found this one which seems greta dimensions for small pénis. 28mm diameter inside and 33mm inside cage lenght. Anyone have try this? Seems the ring a little bit strange and still hava lock similar with HT but then another lock outsider! There's any place where i can get a review from this cage or any informations? https://www.ebay.com/itm/Hot-sale-N...hash=item3d51e17171:m:mVVsCixfB3cB_byei3_zmeQ
this device is a knock off of 3D printed devices from a guy on shape ways. https://www.shapeways.com/shops/pedro69?section=*X3+50mm+family&s=0 Also there are not two locks. What they are showing you is that there are multiple ways to lock the device, either with a metal magic locker or a number tag for say metal scanners. So if you like this design you might be better off getting one made to your custom dimensions by pedro on shape ways.
@Rui Pinto, It is a copy (an exact one, according to Pedro69, the designer) of the KHD series on shapeways. Tried it, Like it a lot, just need to have a custom ring made, which, according to my somewhat skewed sense of ethics, means I need to buy the whole thing. Which I can't afford right now. As @ineverknew said, you can use the magic locker or the pin that goes in its' place along with a plastic seal. HTH