Professional Phono Plugs Ground contact machined from solid brass with 0.5micron gold plating. Unique ‘T’ shaped slot for effective spring contact pressure Solid brass body effectively shrouds connector providing 100% shielding PTFE insulation for low dielectric constant Large 0.5micron gold plated crimp clamp for strong and secure cable retention Spring strain relief Finished in black chrome Available with color coding; body printed with either red RS logo or white RS logo Overall length 62.6mm (inc. strain relief) Diameter 12.4mm (Max cable dia. 5.5mm) Warning: Not to be used as mains connectors