352327 Brand new and high quality Specially designed for acoustic instruments Fit most string music instruments such as guitar， violin， mandolin，banjor， etc. Color: black Length: 63 cm How to install: 1. Remove the plastic film from the back of the 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. Please remove any dusts before placing. 3. Drill a hole from inside body， loosen the end， pin jack nut， insert it to the hole， and tighten the nut The above the steps are for reference. The actual installation depends on your instruments. 1 x Pickup 1 x Adhesive tape 1 x Tie 1 x Washer 1 x Nut