Jonard Tools Mid Span Slitter (1.2mm-3.3mm) Designed to provide easy access to optical fibers in loose buffer tubes 1.2mm - 3.3 mm diameter Precision grooves buffer tube slitting is done without damage to the fiber. The blades are replaceable (MSB-1533) Easy to use, close and pull, select groove: 1.2 - 1.5 mm, 1.5 - 1.8 mm, 1.8 - 2.1 mm, 2.1 - 2.5 mm, 2.5 - 2.9 mm, 2.9 - 3.3 mm