The PATENTED and award-winning MS-426 Mid Span Slit and Ring Tool is designed to provide easy access to optical fibers in Prysmian ESMF Optical Mini FlexTube� cables (as well as other thick-walled 5.8 to 12 mm diameter jackets, including Corning equivalent cables). Building on the popularity of the Jonard Tools MS-6 and MS-26 Fiber Optic Mid Span Slitting Tools, we have incorporated a ring feature in the tool to make it even more versatile.