Carbon steel EPP finish Improved internal lock mechanism The color finish helps to prevent equipment loss by allowing for easy property identification and tracking. Color can also be used to enable or reinforce a classification system such as threat level, medical condition, jurisdiction and more. The color coating is applied using a process called Electrolytic Polyurethane Plating (EPP). EPP fully coats restraints inside and out without interfering with the lock mechanism or jaw swing-through. The durable EPP finish is resistant to chipping and scratching. The rust resistant EPP finish exceeds the National Institute of Justice&';s 12 hour salt spray testing standard. The Model 750C features an improved internal lock mechanism for increased tamper resistance, smoother ratcheting action and greater durability. The Model 750C is National Institute of Justice 0307.01 certified.table.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }