BB40-2K-K One way Bearing Shield Sprag Freewheel Clutch Bearings With One Key-way on the inner RingBB40 2K K One way With One Key way on the inner Ring Shield Sprag Freewheel Clutch Bearing BB40 2K K One way clutch Shield Bearing, Bearing inner diameter is 40mm, Bearing outer diameter is 80mm and Bearing width is 27mm. Item: BB40 2K K Bearing Type: One Way Clutch Bearing Bearing Inner Diameter: 40mm Bearing Outer Diameter: 80mm With One Key way on the inner Ring Bearing Width: 27mm Quantity: One Bearing Dimensions Torque Ncm d D W 40mm 80mm 27mm 7