For sale: 1piece Replacement Insert Bezel for Seiko Diver’s watch model: 6105 -8110, 6306-7001, 6309-7040, 7002-7001, 7S26-0020. Made from quality aluminium material, black colour, flat pip. After market product. Insert Bezel Outside diameter is approximately 37mm Inside diameter is approximately 30mm Please check actual pictures for reference. Must be installed by a professional watch technician.