YZF-R1 ('07) We used 2 pieces at the front.
If you open the bleeder, only liquid will be drained and air will not bite, especially double discs will fall out overwhelmingly quickly.
Since the screw size is M8 x 1.25, it seems to be suitable for NISSIN / Sumitomo / Brenbo other than Tokiko.
I checked the size with the maker's HP,
Because there is no screw size in the part number, I think that you want to be marked.