CTS has recently discontinued this item. Stock is very limited.
CTS Thompson Model 7083 Blue Box Transport Systems: Safe, strong and tough. CTS Thompson Blue Box systems keeps the handcuffs keyholes covered for top security during transport or detention. Double locks can be activated from outside of box. Accepts CTS Thompson well as other N.I.J. certified handcuffs.
The Blue Box II, model 7083, is the first transport box to be specifically made to convert a set of hinged handcuffs into rigid handcuffs. The box covers the keyholes and allows double locking to be accomplished after application to the individual. The unit can be used in conjunction with a belly chain or alone if a padlock is used. One-piece construction, made from high quality steel. Plated to resist corrosion, fits over most brands of hinged handcuffs. Blue Box II used to have a nickel finish, but now it has a blue "Gorilla" coating that is baked on at high temperature for extreme rust resistance. Weighs 6 ounces.
CTS 7083 Blue Box, May 9, 2017 By Anonymous (Zwolle, LA)(Verified)
Used the original "Blue Box" for years. This adds security for those of us who use hinged handcuffs.
Hinged blue box, April 20, 2017 By Anonymous (Boise, ID)(Verified)
Great product except with the new style peerless handcuff with raised revits. Gap between the cuffs are to far apart and make it very sloppy and exposes the keyhole. Works fine with the older style. The tri hinge cuffs work the best. Almost forgot won't fit the new peerless they are to big and can't get the belly chain link through it.