Use this cylinder input output jack end pin to replace the noisy or malfunctioning output jack on your guitar or bass and it will surely help you build a better guitar! Equipped with 2.5mm input jack for an under saddle piezo or surface transducer, standard 1/4" (6.35mm) output jack. The set includes 3 mounting screws for easy installation. Great replacement for your worn or broken acoustic or electric guitar jack parts. Feature - Color: Black - Material: Copper and Plastic - Finish: plating - Size: 47 x 26 x 15 mm - Jack inner diameter: 1/4 inch output jack - 2.5mm input jack for an under saddle piezo or surface transducer. Standard 1/4"(6.35mm) output jack. - Suitable for guitar bass or also handy for other instruments requiring a side mount output jack. - The cylinder end pin includes 3 mounting screws for easy installation. - Strap button design makes it easy to attach the guitar or bass strap. - Great output replacement for acoustic or electric guitars, bass and other instruments. Help to make your guitar or bass . Package list: 1 x jack socket 3 x Mounting screw