Spartacus Leather Collar to Nipple Clamps. Spartacus has combined our sturdy yet comfortable leather collar with a pair of our most popular clamps, to create an erotic toy designed for elegance, sensation, and control. Collared Clamps utility, grace and control converge in these attractive collared clamps. Nipple clamps have broad tip ends. Dipped in black rubber for comfort. Clamps can be adjusted by the tension screw on top of the device. Collar adjust from 12 inches to 16 inches. Jewel chain connects the collar to the clamps. D-ring hook. Collared Nipple Clamps weigh .95 pound. One size fits most. Spartacus A Passion For Quality Catalog page 15. Made in the USA.