Pen Style Endpin Jack Preamp Pickup Kit for Acoustic Guitar Endpin Jack Preamp Kit 

Specifications: 

100% brand new and high quality 
Easy to install, no need for cutting a big hole on the edge of it
Three style to select as following, please select the right one
1. without adjustment
2. with volume control
3. with volume and tone control

Package Included:
1 x endpin Jack Preamp