One-way bearings are bearings that can rotate freely in onedirection and lock in the other direction. The metal housing of a one-way bearing contains many rollers, balls.Its rolling seat is so shaped that it can only roll in one direction and thereis a lot of resistance in the other direction.Features:High quality bearing steel, durable with high hardness.Hard bearing steel with strong bearing capacity, not easy to deform.Ensure that the clutch can be smoothly engaged, soft to disengage,reduce wear, and extend the life of the clutch and the entire driveline.Enough room for grease to store with a longer relubricationinterval.Mainly used for textile machinery, printing machinery, automotiveindustry, household appliances and more.Specifications:Model: CSK25PPMaterial: bearing steelBore diameter: 25mm / 0.98inOuter diameter: 52mm / 2.05inThickness: 15mm / 0.59inWeight: Approx. 140gPackage included:1 x One Way Clutch BearingNote:Please allow 1-3mm error due to the manual measurement. Thanks for your understanding..