Colnago Threadfit 86.5 Bottom Bracket CupsThreaded shell set for Colnago's ThreadFit 82. 5 framesets Precision machined shells thread into BB interface, accept PF86 bottom bracket cups Shells are drive and non drive specific, and labeled as such with installation direction Torque spec listed, 25 30Nm Low profile, 16 notch spline design best installed with Colnago PressFit shell tool System virtually eliminates creaking, reduces bearing wear Shells come prepped with thread locking compound