Graco Hong Kong Ltd. Offers Unique Air Flow Design Fiberglass Cutter. Graco Hong Kong Ltd. Supplies fluid handling systems and components. Unique Air Flow Design Fiberglass Cutter maintain 100 percent torque to the air motor for unchallenged high and low fiber output, and provides the flexibility to pull the fiber from long distances. Unique Air Flow Design Fiberglass Cutter feature superior airflow, which results in a low operating temperature and the best performance with soft glass. Its model no. Is B-4 10.