Hakko Adds 25mm Conductive Super Fluorine Spring Tubing to E-SJSD Product Line on December 2, 2016 in Products Hakko Corp. has added the E-SJSD-25, with an inner diameter of 25 millimeters and an outer diameter of 33 millimeters,…... Membership Required You must be a member to access this content.View Membership LevelsAlready a member? Log in here Continue Reading