~This blade is Diamond blade, estimated life >20,000 cleaves.
York/Photon Kinetics original Replacement or Spare Cleaver Blade are for use with the York FK11, FK11-2, FK11-4, FK11-PK, FK11-LDF, Ericsson EFC11, CK 11, AFL PowerCleave,Fitel S391 fiber cleaver.

✳✳✳✳: After you replace a new blade, when you cut the fiber and the LED doesn't light up,  you may need to adjust the position of the sensor.