PROTECTS: The hard cover protects your Lowrance HOOK2 9 Fish Finder from debris and the elements. SECURE: Fits firmly on applicable fish finder units. Won't blow off even at highway speeds. FITS: All Lowrance HOOK² 9 Fish Finder models (000-14025-001, 000-14182-001, 000-14297-001, 000-14298-001, 000-14299-001, 000-14300-001, 000-14301-001, 000-14302-001, 000-14303-001, 000-14304-001, 000-14406-001, 000-14407-001, 000-14850-001, 000-14934-001)