This is a genuine tab lock washer for all Volvo Penta folding propellers on a Saildrive hub kit. Volvo Penta Part Number 3851994. This is the lock washer where the tabs are bent to secure the hub bolt.
Genuine 2 and 3 bladed fixed propeller cone kit for a Volvo Penta Saildrive using a new style (current) fixed prop that doesn't now use a plastic washer. This kit contains the cone and bolt for the current style propeller. You cannot use an old-style cone that uses a plastic washer with the current propeller design.