Peerless Handcuff Co. 4711 Model 701C Chain Link - High-Quality Security RestraintThe Peerless Handcuff Co. 4711 Model 701C Chain Link is a high-quality security restraint designed for reliable and effective restraint in various situations. With an improved internal lock mechanism, smoother ratcheting action, and enhanced durability, this handcuff is built to meet the highest standards of security and performance.Features: Improved internal lock mechanism for increased tamper resistance Smoother ratcheting action for ease of use Spun rivet construction for added strength and reliability Push pin double lock capability for enhanced security Black oxide finish for a sleek and professional appearance Two keys supplied for convenient access Made in USA Specifications: Weight: 10 oz. / 283 gms Minimum inside perimeter: 5.9 in. / 150 mm Material/Finish: Carbon Steel / Black Oxide Maximum inside perimeter: 8.3 in / 211 mm Minimum opening: 2.0 in / 51 mm Maximum overall length: 9.3 in / 236 mm Learn More:For more information about handcuffs, you can visit the Handcuffs Wikipedia page.To learn about the National Institute of Justice Standard 0307.01, please visit the National Institute of Justice Wikipedia page.For details on carbon steel, refer to the Carbon Steel Wikipedia page.