FITS FOR: The pickup is suitable for many kinds of acoustic instruments, such as guitar, ukulele, mandolin, banjo, etc. GOOD SOUND: It is to eliminate interfering external sounds and not be influenced by sound reflections from nearby objects. So it can transmit good sound quality. STICK PATCH DESIGN: With 3 stick patch transducers, it is very easy to install and you can onto the instrument to minimize the damage to instrument body. NICE AUDIO JACK:The audio jack can replace pin and install the strap. Condition: 100% new Weight: . 36g Installation 1. Remove the tail nails and widen the tail holes to the appropriate width (about 1-1.5cm in diameter) (without tail nails, find the right position to open the hole) 2. Stick the patch to the position that is most acceptable for vibration, usually 3. Attach a fixing pad to the appropriate position and fix the long connecting wire to the fixing pad with a fixing strip. colour:black Material:Metal + ABS size:Cable Length: . 60cm / 23.6in Jack Size: 6.35mm Pickup Diameter: . 3cm / 1.2in Package Contents: 1 x Pickup Piezo 1 x Cable Tie 1 x Block Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.