Spartacus Magnetic Weights. Six 1 ounce magnets allow you to decide how much weight you or your plaything can take! Endurance training for use with nipple clamps, parachute devices, cock rings. Bondage sex devices. Weighs 0.44 pounds. Spartacus A Passion For Quality Catalog page 17. Made in the USA. New image added February 10, 2013.