Angular contact ball bearings made of stainless steel and well thought-out seals ensure a long service life with minimum maintenance in Acros’ BSA Bottom Bracket and thus more carefree time on the bike.High quality bearings for your bike – Ride more, worry less!Key Features Weight: 90g Compatibility: Hollowtech II Shell inside : 1.37″ x 24tpi Shell width: 68/73mm