Fremco part 103-121127005 is the 13 mm inlet guide for MiniFlow fiber blowers, covering 10 mm to 12 mm fiber optic cable. Two guides are required per machine and the part is priced per each, so order in pairs. The guide centers the cable as it enters the drive chain, preventing jacket scuffing and the misalignment that causes slip and lost blow distance. Matching the guide to the actual cable diameter is essential for consistent feed. A standard MiniFlow service part. Stocked by Millennium as part #527120.