Size: 6903

Dimensions: 17x30x7

2RS: 2 rubber seals, one on each side of the bearing.

MAX: Means that it has the maximum number of balls in the bearing. The guide ring that holds the balls has been removed, for better space for balls. These bearings can withstand up to 35% more load. They are filled with up to 90% grease. Particularly suitable for MTB.

ABEC3 - ABEC5: The higher the number, the greater the precision the bearings are made with.