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): 110 Head Outside Diameter (in): 4.33 Head Thickness (mm): 27.3 Head Thickness (in): 1.07 Pilot Outside Diameter (mm): 67.6 Pilot Outside Diameter (in): 2.66 Inside Diameter (mm): 21 Inside Diameter (in): 0.83 Mount Height (mm): 44.3 Mount Height (in): 1.74 Bonded Sleeve: Yes Standard Bolt Size: M20