This is a direct replacement and upgrade for the cushion mounts in the shock mount for the RCA 77 microphones.
It also works in the RCA BK-5's and has a little better damping factor than the original hard Lord rubber co. cushions.
Only one is required per shock mount.
RCA 77DX rubber cushion shock mountRCA 77DX rubber cushion shock mount
As you can see below once installed has the same profile and look as the original.
  • RCA 77C1 rubber cushion shock mount