The CTS Thompson hinged handcuffs are now available in a high security Tri-Max version. Same as
Model 1054, but with the high security Tri-Max system. Positive
"clickback" backloading system. Hinged handcuffs further restrict
movement for added security. Oversized for larger wrists. Inside
perimeter: 6.25" minimum, 9" maximum. 2 handcuff keys included. Weigh
13.4 ounces. Available at Handcuff Warehouse: CTS Thompson Model 1058 Tri-Max Hinged Handcuffs