Heng 2PCS S684 2RS CB Fishing Reel Bearings ABEC-7 4 * 9 * 4mm Stainless Steel Hybrid Ceramic Ball Bearing S684-2OS CB S684RS

ADVANTAGE: Stainless Steel, Ceramic Hybrid, Orange Sealed bearings are specially designed for any application in quest of a high precision, free spinning bearing.
ABEC 7 tolerances makes the Orange Seal line the nearest precision tolerance that Bearings has to supply.
The removable, non-contact rubber seals ends up in a bearing with less drag and that requires less repairs than a regular shielded bearing.
The Grade 5 ceramic Si3N4 balls will allow the bearing to be lighter and spin 50% faster than a standard steel bearing。
Ceramic by its nature is lighter than steel by about 2/3 the wieght, it’s more difficult than steel when it’s in ball form and it’s just about frictionless because it’s non-porous.
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