Features: Goodconsistency and good repeatability. Low insertion loss and high return loss. Small size, less space. The use of simple and convenient, easy to operate. Widely used in red pen fault pen, optical power meter, optical instrument test interface conversion. Specifications: The default send: Singlemode 9/125 um MM: need multimodes - 62.5/125 um or OM2-50/125 um Note: Male and female type adapter with embedded optical fiber and optical fiber ferrule matching tube joint technology, you can according to the requirements of the male for head UPC or for APC, the female for head only accepts UPC, choose the SM-9/125um fiber single-mode fiber or MM-62.5/125um or OM2-50/125um multimodes fiber etc. Package includes: 6PCS x LC/UPC(Female) to -SC/for APC(Male)