C & S Security Gang Chains with security links at 26" intervals. Links are 5/16" X 1" X 3 1/8" and will accommodate most handcuffs or leg irons. Available in 2 to 10 person configurations. The many uses for this chain make it the number one group control chain in today's custody market. It's use in a maximum security unit during a disturbance or fire would allow an orderly and secure evacuation to a more secure unit. Usually ships same day to continental USA. Please email for shipping cost to other destinations.