Jonard MS-526 Mid-Span Slit & Ring Tool (9.8-18.2mm) - Available from Fiber Optic Center

The award-winning MS-526 Mid Span Slit and Ring Tool is designed to provide easy access to optical fibers in Corning Altos loose tube cable with binderless FastAcess technology (as well as other similar thin-walled 9.8 to 18.2 mm diameter jackets).
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Consists of 4 precision slitting grooves and 4 precision ring grooves ranging in size from 9.8 mm to 18.2 mm
One side of the tool performs radial/ring cuts and the other side slits the cable (longitudinal cut)
Compact design weighing less than 0.61 lb (277 g) with included tethering hole makes it perfect to use in tight spaces or on the go
The indicator line on top of the unit indicates the position of the blade for accurate slitting and ringing
This tool was specially designed for use on Corning Altos® loose tube with FastAccess® technology cables and other similar style cables
Replacement blade set available, part number: MS-526RB

[@kennethstolfi9458]

Does this work on armored cable?

[@fiberopticcenter]

This tool will not cut a monicoil steel tube (typical armor used).
But a thorough answer will depend on the kind of armor you are referring to and if the objective is to remove the armor or the jacketing over the armor. Feel free to email at [e-mail] with additional details; we are happy and eager to respond to those!