2 - TUBO 20MM + TORNILLO PARA RELOJ AP AUDEMAR PIGUET ROBLE REAL OFFSHORE
17MM 18MM 19MM 20MM 21MM 22MM 23MM 24MM 26MM. Total Length: 20mm (including both screw ). It is 20mm and you will get 1 set ( 2 ). This tube and screw are made of the highest quality 316L stainless steel.