Screw size for external spool holder

Does anyone know the size of the screws that attach the external spool holder to the rear of the P2S? I need to add another holder.

The P2S seems to require

ST3x8 screws * 2

This is based on the product listing for an extra spool holder: Spool Holder - P2S | Bambu Lab US Store

My H2C came with spare screws for that… no idea on the P2S but perhaps worth checking, if you still have those bits around somewhere.

(H2 series uses 3x12 screws.)

HTH,
-Max

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Thanks. I also found Rear Panel Replacement Guide for the P2S.