This kit contains 6 replacement mounts fabricated in rubber to better attach the front panel for a Revox A77.
This upgrade is relatively straightforward to install, just pop off the front panel and the lower bottom front panel, unscrew the old plastic mounts (these tend to go brittle and snap), screw on the replacement rubber mounts then reinstall the front panels.
 
See images for example of where to screw the rubber mounts.
 
Brand new.
Free postage.