Monadnock Standard Steel Chain HandcuffsNickel w/Double Key Hole 1189171. This pair of Handcuffs from the experts at Monadnock has double locking capabilities with a thumbscrew and a leg tie. The Monadnock Standard Cuffs w/Double Key Hole are made with a nickle finish that will not tarnish rust or require expensive upkeep and maintenance. For a great way to make sure you have the best that law enforcement handcuffs on your side choose the Monadnock Double Key Chain Handcuffs. Specifications for Monadnock Standard Steel Chain Handcuffs w/Double Key Hole: Manufacturer: Monadnock Finish: Nickel Package Contents: Monadnock Standard Steel Chain Handcuffs w/Double Key Hole Monadnock 1189171: Standard Steel Chain HandcuffsNickel w/Double Key Hole