The Vanguard PQ-46/QS-48PF is a professional quick-release plate adapter system for photo and video applications. This adapter plate measures 140 mm in length and features a two-component design consisting of a base plate and a quick-release plate. The base plate integrates a secure locking mechanism with a safety lock to prevent accidental release during use and ensure reliable camera attachment. Two built-in spirit levels allow for precise horizontal alignment for accurate camera positioning. The quick-release plate offers versatile connection options with both 1/4-20 and 3/8-16 camera mounting threads, as well as a dedicated video pin for enhanced stability during video recording. The base plate is attached to tripod heads using the included 3/8-16 screw pin, creating a secure connection between the camera and support system. Made from durable materials and finished in black, this adapter plate system upholds Vanguard's reputation for high-quality photo accessories. The design focuses on practical functionality with special attention to safety features that prevent accidental camera release, making it suitable for professional photographers and videographers who need reliable equipment for various shooting conditions. The combination of multiple mounting options and integrated leveling tools provides comprehensive support for different camera configurations and shooting scenarios.