Piezo Transducer Pickup Amplifier for Guitar Violin Ukulele Banjo Cigar Box Description: brand new and high quality You only need to drill two small hole in your guitar, so that the guitar cable can be connected to the output line, when you do not you can put a small round cap, let your guitar more beautiful. Patch you can change the position, find the best location paste up, it can be a good pick up your guitar sound to the speaker, so you get the best sound. Feature: 1. Small, exquisite, can give you the best sound 2.No soldering required, just drill two hole for the jack & glue on the piezo! 3.Fit for almost string music instruments such as guitar ,violin ,mandolin ,banjor etc. 4.Easy to install, convenient to use. 5.The product is the latest R & D design, can replace other pickups, hoping to give you a surprise Diameter:29mm(approx) Color:Black,as picture shown Quantity: 1 set Note: Transition: 1cm=10mm=0.39inch No retail package. Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 x Pickup(other accessories demo in the picture is not included.)