https://www.treatland.tv/original-OEM-tomos-sprag-clip-for-A35-p/tomos-sprag-clip-a35.htm
A35/55 are the same. A3 is different. It goes on the back of the gear cluster on the gear where the inner pedal chain hooks to. Hooks to this gear.
https://www.treatland.tv/tomos-OEM-starter-assembly-cage-p/tomos-oem-starter-gear-222209.htm (edited)