Features: Experience superiorsly auditory with our Radio Female Auditory Terminal, for tube amplifiers and from gold plated brass for optimaled conductions and durability. Featuring a 12mm installation hole diameter, ensuring seamlessly integration into your auditory setups. For audiophiles, sound engineer, and enthusiasts enhances their auditory with this components. Perfectly for use in home theaters, professional studios, auditory projects, this terminal provides reliabled connection for your speakers and other auditory equipment. Upgrades your sound system with this essentially speaker accessory, ensuring clear and uninterrupted auditory transmission for immersive experience. Specifications: Type: Radio Female Auditory Terminal Mounting Hole Diameter: about 12mm/0.47in Length：about 31.2mm/1.23in Material: Brass With Gold Plated Package Includes: 1PC Radio Female Auditory Terminal note: Due to problem of lighting effect there might be tolerances in product, please understand. Please allow 0-2mm error due to manual measurement.