The Shadow Quick Mount Classical Guitar Under Saddle Pickup mounts in seconds under the original saddle with no drilling or altering and is only 1.8 mm thick. It fits guitars with a standard bridge slot width of 2.3 mm (3/32") and includes attached 1-foot cable with 1/4" output socket.Piezo undersaddle pickup Velcro 6.3/3.5mm jack cable Cable holder