This product is either discontinued or we cannot get that from suppliers.
Garmin 010-11636-20 Bronze Thru-hull Transducer Airmar B75M, Frequency: CHIRP (80-130 kHz), Power: 600 W, Beamwidth: 24/16, Maximum depth: 900 ft., Depth/speed/temperature: Depth and Temperature, Number of pins: 8-pin, Cable length: 39 ft., Supported deadrise/transom angles: 0-7 degree deadrise.
This bronze thru-hull mount transducer is designed to allow both traditional and spread spectrum scanning when used with a compatible sonar like the GSD 26.