6.3mm Phone Jack, 6.3mm Jack, 6.3 Jack, Earphone Jack, Headphone Jack, Amplifier Jack, Amplifier Connector, Guitar Connector, Guitar Jack, Guitar Amplifier Connector, Guitar Amplifier Jack, Electric Guitar Jack, 2, 3 Poles (Mono, Stereo) with or without Switch, Horizontal Type, Lead Free, Pb Free Product, RoHS Compliance.