Secret weapon for long distance wheelsCast longer and fasterSuper corrosion resistant bearingBearing able to work in salt waterHigh speed bearing make you cast longer and fasterReducing the rolling resistance and saving energy wasIn ceramics due to its nature it is lighter than steel by about 2/3 the wieght,It is harder than steel when it is in ball form and is practicallyBearings without friction because it is non-porous.The will never corrodeOr rust when working in salt water.size:3*10*4mmMaterial:ceramicscolour:whitePackage Contents:2 * Ceramic bearingOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.