Nickel carbon steel Improved internal lock mechanism Spun rivet construction Smooth single strand action Profiled edges The classic design is new and improved. The Model 700C features an improved internal lock mechanism for increased tamper resistance, smoother ratcheting action and greater durability. The 700C incorporates spun rivet construction, push pin double lock capability and nickel finish. Two keys supplied. The Model 700C is National Institute of Justice 0307.01 certified, made in the USA, and comes with a lifetime warranty.