Low Noise R188 Fidget Spinner Hybrid Ceramic
Hand spinner stainless hybrid ceramic bearing with Si3N4 ZRO2 balls is made of stainless steel races+ Si3N4 ZRO2 balls + stainless steel /nylon retainer + metal shield rubber seal open. It has longer life and higher speed because of the good antirust performance of stainless steel races and the light weight of the Si3N4 ZRO2 balls.
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