3ATI 2 DEEP, CLEAR CHEM FILM 64311B-101C64311B101C 3 ATI Clamp | 3 ATI, 2in Depth, Chem-Film 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 and anodized finished clamps are ..