3mm Si3N4 Silicon Nitride Ceramic Ball Bearings
3mm Si3N4 Silicon Nitride Ceramic Ball Bearings G5 Ceramic balls are almost friction-less because they are non-porous which gives them the ability to spin faster than steel balls,Silicon nitride is a non-porous, non-magentic, non corrosive, and lighter than steel material, freebies are shared everyday Free Fast Delivery 100% Original + FREE Delivery …
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