Installation instruction:1?￠ Take the plastic film down from the back of transducer to expose the adhesive2?￠ Place the transducer through the sound hole to the lower part of the front body where the guitar produces the best tonal response3?￠ Drill a hole from inside the body， loosen the end-pin jack nut， insert it to the hole and tighten the nutMaterial: metalColor: blackDimension: about 27 mm(1.06") Endpin Jack Length:6cm(2.36")Wire Length:60cm(23.6")Package Include:1 x Pickup