NLQK26G Especially for cycling, this range with an intermediate quality is perfect to resist to the constraints all roads Mostly, this bearing is already mounted on your bike (OEM) Each component (balls, rings, cages and grease) are manufactured and assembled with precision The Black Bearing B3 bearing match 100% to replace your original bearings Chrome steelballs SAE52100 abec 3 Chrome steel rings SAE52100 Chrome steel cage « 2RS » seals wet and dust resistance High quality grease