Genuine Echo COUPLING & INSERT, MAIN PIPE Part# C510000280 Part C510000280 (COUPLING) Where Used: · 99946400023 Power Pruner Orange Extension -- 4 Foot-->4 Foot Power Pruner Extension · PPT-265H S/N: E06711001001 - E06711999999-->Main Pipe -- Lower · PPT-265H S/N: E06812001001 - E06812999999-->Main Pipe -- Lower · PPT-265H S/N: E06913001001 - E06913999999-->Main Pipe -- Lower · PPT-266 S/N: E04111001001 - E04111999999-->Main Pipe - Upper · PPT-266 S/N: E04212001001 - E04212999999-->Main Pipe - Upper · PPT-266 S/N: E04313001001 - E04313999999-->Main Pipe - Upper · PPT-266 S/N: E20514001001 - E20514999999-->Main Pipe - Upper · PPT-266H S/N: E04411001001 - E04411999999-->Main Pipe - Upper · PPT-266H S/N: E04512001001 - E04512999999-->Main Pipe - Upper · PPT-266H S/N: E04613001001 - E04613999999-->Main Pipe - Upper · PPT-266H S/N: E20614001001 - E20614999999-->Main Pipe - Upper · PPT-280 S/N: E08011001001 - E08011999999-->Main Pipe - Upper · PPT-280 S/N: E08612001001 - E08612999999-->Main Pipe - Upper · PPT-280 S/N: E09213001001 - E09213999999-->Main Pipe - Upper · PPT-280 S/N: E20814001001 - E20814999999-->Main Pipe - Upper · PPT-300ES S/N: E06637001001 - E06637999999-->Main Pipe -- Upper