1.5 RD ALUM PER 9M1029-3A REVBCHEM FILM FINISH 6454464544 Round Avionic Clamp | 1.5in Diameter, 1in Depth Chem-Film Anodized FinishMSP avionics clamps eliminate the need for panel removal when repairing or replacing an instrument such as an altimeter or artificial horizon. These patented chem film a..