Spartacus Leathers Cock Gear Metal Cock Rings: Nickel Cock Ring 2". Metal cock rings created using welded nickel. Cock rings when worn around the bottom of penis and testicles, many users discover that cock rings increase sexual satisfaction. Single metal cock rings, the selection of sizes, in nickel or black. Spartacus A Love For Quality Catalog page 26. Made in the united states. New images added Feb 4, 2013. -old