Graphtech Acoustic Comp. Martin Style PS-9110-00 Constructed to transfer the right frequencies more efficiently from the string to the musical instrument and has been proven to increase the harmonic sustain. Shaped for an easy install. Compensated to improve sound and performance. Thickness: 2.38 mm (3/32"); Length: 73.81mm (2 29/32"); Height: 10.32mm (13/32") Model: PT-9110-00 Available at Ant Hill Music!