Adapted V356-000290 Worm Drive Echo. This is fairly crude but it does allow the .325 .043[1.1mm] speedcut nano to be run on the below saws.
Full list of Echo chainsaws this part fits: 269TS, 280TS, 320TS, 360TS, 361WS, 362TS, 362WS, CS-260TES, CS-270WES, CS-280TES, CS-320TES, CS-350TES, CS-350WES, CS-351WES, CS-355T, CS-360TES, CS-360WES, CS-361WES, CS-362TES, CS-362WES, CS-370ES, CS-420EMS, CS-420ES
Replaces 52142-00380