This listing is for a 2 Pack of replacement battery covers. The battery covers come with genuine Buna-N rubber seals. Props shown are NOT INCLUDED. Fits Mitutoyo Digital Micrometer: Series 422, Series 406, Series 395, Series 369, Series 350, Series 345, Series 343, Series 342, Series 340, Series 331, Series 329, Series 326, Series 324, Series 323, Series 317, Series 314, Series 293, Series 227 Alternative to Manufacturer Part Number 04AAC124