Jelly cock rings are for real softies. For masculine, tough penis enhancement, only a strong metal cock ring will do. This set features cock rings in three sizes, so you can slip one over your balls and use the others up your shaft or on the tip. The shiny silver looks great on all penises and the erection support and heightened sexual stimulation add to the overall package, so to speak.3 Rings Measure. 1.25in, 1.5in and 2in.