AS – Cal 1831 – Stem – Part 401 – .9 mm – Tap 10 – 16.5 mm long – NOS – Sealed 27 กรกฎาคม 2026 0 The stem has a. 9 mm... Read MoreRead more about AS – Cal 1831 – Stem – Part 401 – .9 mm – Tap 10 – 16.5 mm long – NOS – Sealed