This Oval shaped weight is made from Stainless Steel -Pain is Pleasure and the Kelis Teeth Spiked Ball Weight will prove it to you again and again as you expand your erotic games and let your imagination run wild with no limits Ergonomic oval shape fits perfectly between the base of your penis and your testicles. Wide hinge opening for comfortable installation and removal. Built in O-Ring at the front for attaching leads and restraints. Four adjustable spikes to dial in the pain with expert precision.