... Phone PlugSpecification:6.3mm Mono Plug,Silver Plated,Spring-ground,Tip&Spring With Gold Plated,OD:7.5mmElectrical and physical propertiesCharasteristicTRSWithstand ... 6.3mm Mono/TS Phone Plug(Silver Plated,Spring-ground,Tip&Spring With Gold Plated,OD:7.5mm)