Isolation mounts are used to attach and position systems, accommodate displacement, and isolate components from the surrounding structure (vibration, shock, noise.) Mount Type: Two-Piece - Symmetric Head Outside Diameter (mm): 114 Head Outside Diameter (in): 4.49 Head Thickness (mm): 21 Head Thickness (in): 0.83 Pilot Outside Diameter (mm): 90 Pilot Outside Diameter (in): 3.54 Inside Diameter (mm): 28 Inside Diameter (in): 1.1 Mount Height (mm): 43 Mount Height (in): 1.69 Bonded Sleeve: Yes