Graphtech Acoustic Microbalance 16" Radius PS-9650-C0 Constructed to transfer the right frequencies more efficiently from the string to the musical instrument and has been proven to increase the harmonic sustain. A great option to replace or upgrade the saddle on your acoustic guitar that has an under saddle pickup. It uses Graph Tech patented Microbalance technology which allows you to fine tune he output for each string. Compensated to help improve the playability of your guitar and has a 16" radius. Thickness: 3.20 mm (1/8"); Length: 71.27 mm (2-13/16); Height: 8.41 mm (11/32") Model: PT-9650-C0