lozyska dartmoor do sterow blue titanium ridehubPrecision 45 45 ACB (Angular Contact Bearings) with Blue Titanium coating are high quality components for integrated and semi integrated headsets. Thanks to their special blue titanium coating and high quality grease , they provide maximum protection against water, mud, and corrosion. The Blue Titanium version also includes two ceramic balls that facilitate dirt removal and increase the durability of the set. It's a great solution for both everyday