The slave-swing has been constructed by a girlfriend of mine ( Domina )'s slaveboy.
In my opinion, the pictures speak a very clear language, but I'll just explain it to you anyway:
The swing, is intended to hang from the cieling ( or a stable branch in a tree, or from the iron-pipe, holding the lines, you dry your clothes on, after washing them in the summertime, or or...), upon which the slave sits down, onto the swing, impaling his butt onto the plug, pulling his ballsack through the hole in the swing, and finally straps his penis into the rims on the front-part of the swing.
If you cuff his hands i.e. behind his back, he'll be unable to go any further, than the chais allow...
I hope that I'll have an opportunaty, to borrow the swing in a near future, in order to get a picture or two, with the intended 'contents'..
I have now made my own edition, which you can see here: More