The S233 Optical Ribbon Fiber Splitter series are tools to split a ribbon fiber into ribbons with specific number of fibers.
S233B:
Obverse : 4-fibers ribbon > 2 x 2-fibers ribbon
Reverse : 8-fibers ribbon > 2 x 4-fibers ribbon
https://fiber-optic-catalog.ofsoptics.com/documents/pdf/Fitel-Featured-Products-web.pdf
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