3.5mm panel mount gold plated jack with nickel plated solder terminals. Gold plated jack for superior connection. Mounts in a 3/8" mounting hole in panel up to 0.07" thick. Plastic housing. 3.5mm panel mount gold plated jack with nickel plated solder terminals Gold plated jack for superior connection Mounts in a 3/8" mounting hole in panel up to 0.07" thick Plastic housing