The C.S. Unitec END 130/3 PO is a versatile core drill unit. Users can drill up to 3-in.-diameter holes by hand, or up to 6-in.-diameter holes with it mounted to a rig, with or without a vacuum.

“Hollow core fiber is not being made at anything like the same scale as standard fiber,” says Lord. “The standard fiber has been around 40 years. People know how to make it in massive volumes.