Compatible With: Rolex 11427, 16000, 16014, 16030, 16200, 16220, 16234, 16250, 16264, 16600, 16610, 16610L, 16610V, 16650, 16660, 16700, 16710, 16760, 16800. It is made from solid 316L stainless steel for durability and features a "D" style design with a screw.