Enduro Bearings 3903 LLU - ABEC 3 - Double Row - 17X30X10

Enduro Bearings 3903 LLU - ABEC 3 - Double Row - 17X30X10

Grade 10 Chromium Steel Balls

Enduro ABEC-3 bearings start with high-precision Grade 10 Balls are ground within 10/1,000,000″ round, which is twice as round as the industry standard, at it’s highest level. 

52100 High Carbon Chromium Alloy Races:

Enduro Bearings uses highest quality 52100 High Carbon Chromium Steel Alloy race material from Japan.