Product Description ABEC-9 super precision high speed ball bearing features:
Model number:B608C-2RSR Skateboard, Roller skates, Longboards, Spinner, Bicycle 8pcs/box Size: Bore diameter: 8mm/Outside diameter: 22mm/Width: 7mm ZrO2 ceramic balls X 7pcs, light weight PA66 polymer cage/retainer, chrome steel out and inner rings Phosphating surface/Black ABEC-9 tolerance class Optimized internal clearance for Skateboard, Deck, Skidding, Spinner, Bicycle Extra long life, better performance at anti-rust and anti-corrosion Both side sealed, less maintenance needed 4 different colors seal, black surface, red retainer Packed well in metal box Non-conditional refund/replace
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