Spartacus Leathers Cock Gear Rubber Cock Rings. 1.25 inches Firm Rubber Cock Rings Black. What fun! When worn around the base of the penis and testicles, many users find that cock rings increase sexual pleasure. Cock rings in a single size 1.5 inches. Weighs 0.24 pound. Spartacus A Passion For Quality Catalog page 18. Made in the USA.