89221-460-840 Hex (6Mm) Wrench - Overview. The 89221-460-840 Hex (6Mm) Wrench is a specialized tool designed for use with Honda marine engine systems. This hexagonal wrench supports mechanical and service tasks, playing a crucial role in the assembly, maintenance, and repairs of Honda marine equipment. By ensuring precise bolt tightening and loosening, it helps maintain the dependable operation of your marine engine and related systems. Engineered to match exact Honda factory specifications, it