Polish until the surface has a glossy appearance

Use the right polishing pad: Different polishing pads produce different results

Our fairing block places the GT21

Tip: Perfect for both private homes and professional cleaning

Garmin Dual Beam (4-pin) stock_frederiksvaerk Polish until the surface hasThis dual beam transducer replaces the one that came with your echo series fishfinder. A 500 W 4 pin transducer with a maximum depth of 900 ft (274 m), an operating frequency of 77 to 200 kHz, a beam width of 45 to 15 degrees, and can be mounted on a 0 to 70 degree transom. The transducer kit comes with installation instructions. Follow the instructions carefully to avoid damaging your boat.