IKN 1 pcs Metal Cylinder End Pin Output Jack Socket for Acoustic Guitar,Silver Guitar Jack used for replacing that noisy or malfunctioning jack of acoustic guitar. Size:1/4" (6.35mm) Mono Stereo jack, total length is about 1.97in/50mm. Cylinder shape,each set come with 3 mounting screws. Material:metal;Color:Chrome. Package Include:1pcs jack,3pcs mounting screws.