Mercury Quick Change Trim Anode Large Bravo Aluminum (M-706190-A) Long Life.
Used to replace the original style horseshoe anodes on mercruiser Bravo Drives, that loosened prematurely, due to the screw retaining wall being too thin.
Used in conjunction with the adaptor plate M-706188
One 10/32 X 3/8 allen cap screw stainless steel for holding anode to the adapter plate
It takes 1 screw to hold the anode on the adapter plate, making it very easy for owners and divers to change.