The product is a lot of 2 genuine OMC Evinrude Johnson lock plates with the manufacturer part number 307578 0307578. These lock plates are new old stock (NOS) OEM parts designed for use with OMC Evinrude Johnson engines. The lock plates are essential for securing specific components in place and ensuring proper functioning of the engine. Please note that this product contains a California Prop 65 warning for potential cancer and reproductive harm, as indicated on the packaging.