The Acoustic Model is a piezo-electric transducer that can be mounted at any location on the guitar’s top. A non-hardening putty is used to mount the pickup, allowing easy removal. By experimenting with the position of the transducer, you can determine the placement that achieves the best tone for you. Works on steel, bronze, and nylon string instruments. Single conductor wiring. POSTAGE:The postage is FREE, so long asyou live in Australia, add $2.80 for registering if needed.