ENDURO BEARINGS Laager - 61805 LLB ABEC 5

BB 61805 LLU/LLB A5-bag - 25x37x7 mm The most common use for this bearing is as a direct replacement bearing for Shimano external cup BBs when using the plastic Shimano bearing insert. If you wish to avoid using the plastic insert MR 2437 is the correct bearing for the job.