It is an aluminum servo mount that supports the rear side of the servo used in the roundly slide rack for the YD-2 series.
Description
Supported chassis
DP-YD2SX3P / DP-YD2RXP / DP-YD2RAP / DP-YD2SAP / DP-YD2SSAP / DP-YD2RSAP / DP-YD2ZXP / DP-YD2RXTP /Supported chassis (optional)
DP-YD2ACA / DP-YD2Z / RDR-010 / DP-YD2ZG / RDR-010G / DP-YD2RTRW-1 / DP-YD2RTRW-2 / DP-YD2RTRR-1 / DP-YD2RTRR-2 / DP-YD2ZS / DP-YD2ZSG / SDR-010 / SDR-010LTS /