LWG-2 wedge along with a Transducer Shield will put the transducer at the correct angle when the boat is in the water, when installed on a boat set back/step or Jack Plate hole shot plate.
WG-1 Wedge along with a Transducer Shield will put the Transducer at the correct angle when the boat is in the water when installed on a Boat Set Back or Jack Plate hole shot/baffle plate
This wedge is used when attaching a Lowrance 10-1/4″ transducer with a Transducer Shield to the Set Back of a Boat – example some Ranger Boats have a good set back.