0.30+/-0.02 meter long, 900um OD loose hytrel tubing jacketed, 6/125um 980nm PM fiber patchcord terminated with APC polished (8 degrees, curved) 2.5mm OD FC ferrules with metal flange on both sides. SP: PM slow axis is aligned (parallel) to the metal flange slots on BOTH sides. On one side the polish axis is parallel to the PM slow axis and on the other side the polish axis is perpendicular to the PM slow axis.