Hiatts model UL5 black finish handcuffs: "The Ultimate Handcuff." "The only folding/rigid handcuff in the world is one of the most secure as well! With HIATTS' exclusive backloading speedcuffing feature and 25 locking positions for different-size wrists, it snaps rigid when drawn and conveniently folds after use." Imprinted with HIATTS on each cuff, with the serial number on the shackle arm. Made in England. Standard key- 2 included. Weigh 17 oz.