bROK PRINTLOCK EZ Access Coupler Lock 5/8" Pin. A new road in security featuring personalized biometric operation to safeguard your towing and trailer products. With PRINTLOCK Smart Lock Security operation and multiple-user coding, personalized protection is literally at your fingertips. PRINTLOCK Smart Lock Security products accommodate up to 20 individuals uniquely coded for multiple users and fleet owners. PRINTLOCK can also be operated with the included "back-up" key for operators who are not yet coded. IP55 dust and waterproof.