sensitivity piezo pickup rod for classical and box 3string guitars, 57 mm length. Designed to convert acoustic string vibrations into a clear electrical signal while remaining easy to install and use. Key benefits Capture more of the instrument voice: sensitivity transducer style converts string and soundboard vibrations into a stronger, more detailed signal for amplification or recording. Compact fit for bridge installations: 57 mm length fits many bridge and saddle applications for classical and box 3string guitars, making it a practical choice for small instrument projects. Simple to use: designed for straightforward installation with minimal modification, allowing quick upgrades or replacements without complex electronics work. Consistent performance: transducer design reduces the need for multiple sensors and keeps pickup placement simple while delivering reliable output. Features and specifications Function: piezo pickup rod for converting acoustic vibrations to an electrical signal Type: transducer style piezo bridge pickup rod Length: 57 mm Compatibility: suitable for classical guitars and box 3string guitar models that accept a bridge or saddlemounted pickup rod Use: guitar parts and accessories intended for installation or replacement in acoustic amplification setups Practical use scenarios Upgrade a classical guitar for live performance by installing the rod under the saddle to drive an amplifier or PA system. a worn or damaged bridge pickup on a 3string box guitar to restore amplified output and playability. Add a direct feed source for home recording to capture a natural acoustic tone without relying solely on microphones. What makes it stand out sensitivity transducer design provides improved signal capture from the instrument body and strings. Compact 57 mm form factor tailored to common bridge installations on smaller acoustic instruments. Focused on practical installation and consistent sound conversion for players who need a reliable pickup solution. Contents and compatibility notes Piezo pickup rod for bridge installation Intended for use with classical and box 3string guitars that accept a bridgemounted piezo rod. Check instrument bridge dimensions for fit prior to installation.