Brand: RadioShack. MPN: 274-0662. Use these nylon binding posts for a professional look and reliable connections. Package includes one red and one black binding post Mount and 5/16 (8.2mm) diameter holes. Dimensions 50mm x 11mm Color Black & Red Mounting Hole 6.5mm x 8.2mm Metal Nickel Plated Brass Socket Type Banana Socket Cross Hole Size 2.1mm Insulation Material Nylon #6 Rating 10A Insulation Resistance DC 500V 100MΩ 1 Minute Dielectric Strength AC 1000V 1 Minute Operation Temperature -20°C - +80°C.