Humane Restraint NCS-300 and Humane Restraint NCS-900. Close the door on squad car damage and injuries. Humane Restraint Nylon Control Straps are made of 6000# tensile strength heavy duty web. Available with hook and loop closure (NCS-300) or spring buckle closure (NCS-900). Both allow for fast application and removal while restricting movement of a restrained person's legs. Secure the closure and simply close the door on the control tail.