ITEM NAME:Self-adhesive Electronic Acoustic Instrument Pickups for Guitar Ukulele #JT1 Product Description Description: Self-adhesive Electronic Acoustic Instrument Pickups for Guitar Ukulele Mandolin Banjo Pickup Piezo Transducer Include 3-pack 27mm Piezoelectric Disk Elements + with 2.36" Endpin Jack Feature: Fit for most string music instruments such as guitar ,violin ,mandolin etc. To let your acousitc instrument turn into electro-acoustic one Connects to your instrument via 2.36" jack with 23.6" cable High Output - No Battery Required Pre-wired, No Soldering Required Installation Instruction: 1 Take the plastic film down from the back of transducer to expose the adhesive 2 Place the transducer through the sound hole to the lower part of the front body where the guitar produces the best tonal response 3 Drill a hole from inside the body, loosen the end-pin jack nut, insert it to the hole and tighten the nut Specification: Material: Metal Color: Black Dimension: about 27 mm(1.06") Endpin Jack Length: Approx.6cm(2.36") Wire Length: Approx.60cm(23.6") Included: 1 X Pickup.2 Place the transducer through the sound hole to the lower part of the front body where the guitar produces the best tonal response. 1 Take the plastic film down from the back of transducer to expose the adhesive.