partsfan > part info
47547-12010
PLUG, BLEEDER(FOR BRAKE CHANGE VALVE)
etc... 
Proper price
JPY 160 (excluding tax)
 
JPY 173 (including tax)
 
USD 1.44 (rate $1=¥120 , including tax)
Brand
Product No. (link)
PEX
 
Breather Screw / Valve
search part number.