Price history on Walmart.com for
Amphetamine Inline Skate Speed Bearings Set of 16 Pre-Lubricated Ceramic Hybrid
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This combination of Ceramic & Titanium Coated balls allows for one of the lowest friction ratios possible. Lower friction means cooler running and longer lubricant service life. With this bearing you get the precision of ceramic and the durability of steel balls. The Ceramic ball cleans debris and cools friction allowing for a longer lasting bearing.
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