These tools use long stiff arms with patented cone cutters on their ends, that spread out when rotated. These tools are used to clean light to medium deposits in large diameter tubes and pipes.

Tube I.D. Wing Tool - Stiff Arm Cutter Product Code Spare Cone Cutter Product Code
mm inch
42.9-101.6 1.11/16-4 PM-WTS-1688 PM-SCT-937
100.0-165.1 3.15/16-6.1/2 PM-WTS-3938 PM-SCT-937