Praxis Works T47 Shimano 68/73mm Road/MTB Bottom Bracket (External)

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The T47 E.B. bottom bracket is for installing a Shimano Hollowtech II crank into a T47 frame External Bearing frame, use for a 68mm Road frame and 68/73mm Mountain frames.
• For Shimano Hollowtech II cranks only • 7075 T6 AL cups/T47 External Bearing • Ceramic version is Grade 5/ABEC 5 rating • 68mm Road version • 68/73mm MTB setup Tool Used • Use any standard outboard cup BB tool with 16 external notches and a 44mm ID