16 surface of the blade. 
 Applies to brand: Furukawa Fiber Fusion Splicer. 
 Applies to the machine model is: S-321/S-322/S-323 Series fiber optic cutting knife. 
 16 surface of the cutting face. 
 Applies to Brand: Fujikura and Nisshin 
 Applies to models: CT-20 CT-30 series of fiber cutting knife 
 Korea Nisshin CI,-01 Fiber Cleaver 
 12 surface of the cutting face. 
 Applies to Brand: Sumitomo and Ericsson 
 Applicable models: the Sumitomo FCP-22/FC-6 Series fiber cutter 
 Ericsson P22 series of fiber cutter 
 12 surface of the cutting face. 
 Apply to the Brand: Fujikura Fusion Splicer. 
 Applies to models: Fujikura CT-04 and CT-07 series of fiber cutter. 
 Brand: Kuala 
 Series of models: KL-260, etc. 280 300 welding machine, cutting knife