ENHANCED STABILITY - The ProMediaGear PBSA74 bracket plate ensures your Sony Alpha a7R IV remains stable on any tripod, preventing unwanted movement during long exposures. SECURE LOCKING - Featuring a robust Arca-style design, this bracket plate provides a secure and reliable connection, giving you peace of mind during shoots. LIGHTWEIGHT DESIGN - Crafted from high-quality aluminum, the PBSA74 adds minimal weight (1.6 oz) to your setup, making it ideal for travel and on-location photography. UNIVERSAL COMPATIBILITY - Equipped with 2x 1/4'-20 female tripod mounting threads, this bracket plate is compatible with a wide range of tripods and support systems.