Laden...Even geduld aub...AUWAHHH!
Did you know the Thai are excellent in torturing? Though these are made in Germany, they invented these strong black steel pain sticks especially for the nipples. Pull the two rods apart, put your nipples in between and increase the pressure by moving the two rings to each other until you (or your mate) starts screaming
NOOOOOOO
... and then a little bit more of course :-)
These are sold in pairs so you get two of course.