Stinginess in the quality of domestically produced bearings, rude. Exchange overseas bearings to some extent, exchange. The rotation resistance of the wheel became small. The amount of information on the extension and contraction of the fork has improved dramatically. By the way, the former bearings, flakes, steel balls, in the state of not rusting, exchange.
Purchase thinking that grease retention is good by having both side seals. Because it is exchanged regularly, no effect is felt. Once press-fitted, it will not be lubricated again, so it might be good if you used degreasing and packing good grease. There is no dissatisfaction, but it takes delivery time.