In a UPC polished pigtail, the ferrule end-face in the LC or SC connector is polished with no angle. The other end of the pigtail is cut and can be spliced to the trunk cable. The multi-mode fiber is always UPC polished. The pigtails are sold in package of 12 pcs on a cardboard sheet, either in single color or in IEC 60304 colors (order according to FIN2012).
See also Pigtails APC | FTTH installation package