T47 threaded BB cups for T47 frames and M30 28/30mm spindle diameter Praxis - compatible cranksIncludes sleeve to fit between cups for added protection from dirt and grime, and also keeps your internal wires and hoses from rubbing on the crank spindleCups have outboard bearings, and can be used in BB shells with widths from 68mm to 100mmIncludes BB with bearings, silicone dust seals, 28mm insert, and an assortment of spacersMachined aluminum cups thread together directly into a T47 BB shellBearings are easily serviced or replaced68/73mmT47Box/Praxis M30Aluminum155gBlackUPC/EAN/GTIN: 811079029010