These bearings are several thousand smaller and fit easily in the hole they were made for. They have to be pressed in, so I see this as a disadvantage. One of the bearings was actually pressed in, which was nice. You will most likely need spacers to press them in. They're not exactly smooth either, and there's a sense of trash in the race. They also smell like cancer and use a horrible lubricant that feels like used gear oil. However, I have raced them on my kart (2 per wheel) and after about 5 hours of running I had no rattles. You get what you pay for with these bearings. If you just want something that fits the basic definition of a camp, they will fit.
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