Promax EX-1 Alloy external Sealed Bottom Bracket 68/73mm Black MFPN=ICNHG60111116QS Removable valve core allows for

Removable valve core allows for fast cleaning and uninterrupted air flow Length (mm) 34 Material Alloy Valve Core Removable Valve Presta Defined Color Red

Up to 100 hours of run time on 2 AAA batteries (included)

Fits most major manufacturers` sprocket sizes

non-slip cut

Promax EX-1 Alloy external Sealed Bottom Bracket 68/73mm Black MFPN=ICNHG60111116QS Removable valve core allows forEX 1 External bottom brackets feature cold forged and CNC machined alloy cups dual labyrinth bearing covers and precision sealed bearings. They are the perfect match to Promax CF 2 and HF 2 cranks and ultimate upgrade to the budget BBs sold with most crank sets. Fits all 24 millimeter bottom bracket spindles and frames with 68 or 73 x BC1. 37 bottom bracket shells Bottom Bracket Shell I. D. 1. 37 BB Frame Interface English BB Shell Width (mm) 73