Oxidized finish provides corrosion resistance and longlasting color stability; it does not fade. Made from aluminum alloy for professional grade strength and light weight. Doubleframe design increases mounting rigidity for a firmer, more stable hold; includes antiskid pads to improve grip and provide shock resistance. Function and compatibility: suitable for installing car lights, brackets, and speakers. Size and fit: dimensions vary by model; please refer to the product specifications for exact size. Performance: durable under vehicle vibrations, delivers stable mounting over time. Use scenarios: 1) Mount aftermarket LED lights on the front bumper or grille for secure, vibrationresistant support. 2) Secure brackets for automotive accessories, maintaining stability on rough roads. 3) Install car speakers in doors or rear compartments with a sturdy aluminum frame that provides rigid support and reliable sound delivery.