... face types allow for faster polishing, and low back reflection and optical loss, while ensuring maximum repeatabilityST optic fiber Features: ... 1,Low insertion loss and back reflection loss 2,Ferrule end surface pre-domed3,Excellent ... , DIN, D4, SMA2, Ferrule End-face: PC, UPC, APC3, Core Type: Single-mode (SM: 9/125um), Multimode (MM: 50/125um ...