Features 1、Very easy to install and sounded good through several different amps. 2、With the advantage of being able to eliminate interfering external sounds and not be influenced by sound reflections from nearby objects. 3、This is a pre-wired, pre-soldered piezo and jack harness which make it easy for you. Attach the piezo in or on your build, drill a hole and mount the jack. 4、Fit for most string music instruments such as Guitar Mandolin Cigar box Guitar Violin Ukulele Banjo, etc. 5、Great accessory for guitar enthusiasts. Specifications: Features: Very easy to install and sounded good through several different amps. With the advantage of being able to eliminate interfering external sounds and not be influenced by sound reflections from nearby objects. This is a pre-wired, pre-soldered piezo and jack harness which make it easy for you. Attach the piezo in or on your build, drill a hole and mount the jack. Fit for most string music instruments such as Guitar Mandolin Cigar box Guitar Violin Ukulele Banjo, etc. Great accessory for guitar enthusiasts. Specifications: Condition: 100% Brand New and High Quality Material: Metal & Piezoelectric Ceramic Sensor Color: Shown as Pictures Sensor Diameter: Approx. 50mm/1.96inch Interface Diameter: Approx. 6.35mm/0.25inch Cable Length: Approx. 50cm/19.7inch Weight: Approx. 27g Packing List: 1 x Guitar Pickup 2 x Gaskets 3 x Nuts 1 x Ribbon 1 x Gommures Package List