ABEC-7 RS BLUE CARBON BEARINGS (8pcs) PACK METAL NILS EXTREME

ABEC 7 RS BLUE CARBON Nils Extreme are bearings made of high quality carbon steel, providing excellent hardness and durability. It is characterized by the lowest rolling resistance, which translates into the highest speed in the American Annular Bearing Engineering Committee standard, abbreviated as ABEC. An important parameter of this bearing is eccentricity, i.e. roundness on the track in the inner ring, which is only 0.0025 mm. A specially designed metal-rubber cover protects against unwanted contamination of the bearing. The bearing is intended for roller skates, skateboards and scooters.