Fiber Optic Cleaner Pen CLE-PEN is designed to specially work well with the female connectors.This instrument cleans both the ferrule and adapter end faces removing dust, oil, and other debris without nicking or scratching the end face.◆ CLE-PEN 125 type is for LC/MU end faces◆ CLE-PEN 25 type is for SC/FC/ST/E2000 end faces Standard CLEP-25 Application CLEP-125-M ApplicationPerformancePackaging Sete.g. CLEP-25Optic Cleaner Pen Packaging ProcessHighly Recommended New Models◆ CLEP-25-P Cleaner Pen with Sleeve Protection; Anti Static; 900+ times clean per unit◆ CLEP-125-P Cleaner Pen with Sleeve Protection; Anti Static; 900+ times clean per unit