The CTS Thompson Model 9000 are larger than the standard handcuffs so that they can fit the legs of the subject with ease. These leg irons aren’t actually iron but a stainless steel with nickel plating for extra visibility. The inside perimeter of these leg irons opens anywhere between 8"-10.75" based on adjustment. Allowing for brief shuffling, the chain is 15" long. These leg irons are relatively light, coming in at 19 oz (a little over a pound). 2 keys included. CTS Thompson Cuffs are made in the USA.