This GMP Tools cable blower accessory (part 89558) is stocked in Millennium's Cable Blower Accessories (Inserts, Proofing Kits) category to support fiber optic cable installation crews using GMP blowing equipment. Components in this category help maintain proper seal and duct-size matching within the blower during air-blown fiber installations, an important factor in achieving consistent placement speed and minimizing cable stress. Having this accessory in stock helps crews avoid delays when a seal or insert needs replacing on an active job. Millennium Part #526805 (vendor part 89558) ships fast contact Millennium to verify fit with your GMP blower model.