This is a package of 20 rubber servo grommets (to act as a cushion for the servo when it is mounted) and are for the following Futaba servos: S28 S128 S29 S129 S30 S130 S31 S131 S32 S132 7-2-92/eke  

BOX DIMENSIONS: 2.50" W. X .50" H. X 2.50" L. BOX WEIGHT: .02 LBS.