Product Description New transom mount transducer design. Quadra Beam, 20/60/90 Degree, 200/83/455 kHz with built in temperature. More secure, especially at high force of waves. Improved running angle and an optional lock down screw to override the kick up. For Use with PiranhaMAX 240 957c Combo 957c Combo NVB 957c Combo CHO 957c Combo NVB CHO 737