Promax EX-1 Alloy external Sealed Bottom Bracket 68/73mm Black multi room pairing • Produce optimal power output

•    Produce optimal power output even in high-temperature conditions

01 ms/cm (conductivity)

Retaining Walls: Assist in the precise and efficient pouring of concrete for retaining walls and other structural elements

Echo Trails: True

•    Can be cooled to -4 °f at the touch of a button

Promax EX-1 Alloy external Sealed Bottom Bracket 68/73mm Black multi room pairing • Produce optimal power outputEX 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 Spindle Interface Type: Shimano Hollowtech II , FSA MegaExo , FSA MegaExo Light ,