Chicago Model L660 Belly Chain. 60" chain with steel link welded at end. Chain and link are entirely plated for high rust resistance. Accomodates standard and oversized handcuffs. Requires only a padlock and a pair of handcuffs to create a quick and easy secure belly chain. Weighs 22.4 ounces.
Available at Handcuff Warehouse: http://www.handcuffwarehouse.com/chmol6rech60.html