The EXFO Cleaning Pen, 1.25 mm, with IBC brand cleaning tip (vendor part GP-151, Millennium part 525156), clears dust and residue from LC and MU ferrules before mating, cutting down on connector loss and failed test readings on a splice or turn-up job. It's a click-style pen cleaner field techs carry alongside test jumpers so ferrules get cleaned right before every connection. Sized specifically for 1.25 mm connectors, it belongs in every splicing and OTDR test kit. Order it with SC and 2.5 mm cleaning pens to cover the full range of connector sizes on a job.