Spartacus Leathers Cock Gear Metal Cock Rings. 1 1/4" Nickel Cock Ring. Steel is a superb alternative for individuals with nickel allergic reactions. Spartacus nickel cock rings create a striking visual statement using their silver color. Made using Nickel. Single metal cock rings, the selection of sizes, in nickel or black. Weighs .26 pounds. Spartacus A Love For Quality Catalog page 26. Made in the united states. New images added Feb 3, 2013