Similar to the classic Underwood. The piezos are embedded in a bronze case covered with plastic. There are two sizes available: 5 mm and 8 mm. For precise fitting to the bridge slots, the height of the sensors can be modified to 3.3 mm and 5.3 mm by removing some material from the plastic cap.
Igor Zubkov, Kase 55, 12012, Tallinn, Estonia Tel./Fax (372) 6 48 01 94